518 curated articles
Angle-encoded quantum kernels on tabular data collapse when the feature map is wider than the intrinsic dimension of the data. We propose the correlation fractal dimension D2 as an a priori qubit budg...
Insider Brief PRESS RELEASE — Diraq and Equinix, Inc. (Nasdaq: EQIX), the world’s digital infrastructure company®, today announced plans to deploy a Diraq quantum computer at an Equinix data center in...
With quantum sensors, simulators and networks emerging, a future of quantum technology may produce quantum states as data---that is, coherently rather than as classical measurement records---thus moti...
The spherical-to-deformed quantum phase transition of the Interacting Boson Model (IBM) is investigated using the variational quantum eigensolver (VQE). The $U(5)$--$SU(3)$ transitional Hamiltonian is...
Yuval Boger speaks with Steve Orrin, Intel’s Federal Chief Technologist, about the sweeping post-quantum cryptography mandates confronting U.S. government agencies and their supply chains. Orrin break...
We analytically characterize entanglement generation by two paradigmatic coherently controlled quantum processes, the quantum switch and time-flip. Retaining rather than measuring or discarding the co...
We present a quantum computing framework for simulating open-quantum-system approaches based on Markovian and non-Markovian dynamics, which is relevant to heavy-ion collisions. To simulate the non-Mar...
Multi-photon dissipation -- a key resource for bosonic qubits -- is usually realized by parametrically pumping a Josephson coupler at the cost of spurious nonlinear terms. Here we instead engineer it ...
Exchange-based semiconductor qubits encompass a broad family of encodings constructed from singlet- and triplet-like spin states, several of which are compatible with operation at zero applied magneti...
Insider Brief PRESS RELEASE – Anyon Systems Inc., a Canadian developer and manufacturer of full-stack superconducting quantum computing systems, and KMT Technologies Ltd., a Matrix Group company, toda...
Fault-tolerant quantum computation requires robust protection of encoded quantum information. In this work, we develop a representation-theoretic framework for constructing protected logical qudits in...
Insider Brief PRESS RELEASE – Atom Computing, a leader in the race to build practical quantum computers, today announced the appointment of Kevin Messerle as Chief Financial Officer. Messerle joins At...
Insider Brief PRESS RELEASE – Diffraqtion, an MIT and University of Maryland spinout building quantum camera platforms for defense and space sensing, today announced strategic investments from Lockhee...
Practical robust self-testing of multipartite entanglement has so far been restricted to small-scale systems due to error bounds that degrade severely with system size. In this work, we establish mult...
Insider Brief PRESS RELEASE – King Abdulaziz City for Science and Technology (KACST), represented by the National Center for Quantum Technologies (NCQT), has signed a research collaboration agreement ...
Neutral atom qubits are one of the leading approaches for implementation of a large scale quantum computer. The original proposals for neutral atom qubits were formulated more than 25 years ago, with ...
The dynamical Lie algebra (DLA) governs the controllability, expressibility, and simulation complexity of a quantum system. Explicitly computing it has been a major computational bottleneck: brute-for...
Insider Brief PRESS RELEASE – Xanadu Quantum Technologies Limited (“Xanadu” or the “Company”) (NASDAQ: XNDU) (TSX: XNDU), a leading photonic quantum computing company, will host its Technology Roadmap...
Insider Brief Your MacBook Pro may be powerful enough to one day manage error correction for a fault-tolerant quantum machine executing millions of operations, according to a new study from IonQ resea...
Insider Brief PRESS RELEASE — Yaqumo Inc. (Headquarters: Chiyoda-ku, Tokyo; Representative Director and CEO: Kazuhiro Nakashoji; hereinafter “Yaqumo”) is pleased to announce that it has been selected ...
Author(s): M. Jerger, F. Motzoi, Y. Gao, C. Dickel, L. Buchmann, F. A. Cárdenas-López, A. Bengtsson, G. Tancredi, C. W. Warren, J. Bylander, D. DiVincenzo, R. Barends, and P. A. Bushev Researchers exp...
Insider Brief PRESS RELEASE — Newly launched Finnish startup S-Transistors, originating from VTT Technical Research Centre of Finland, has raised €2.6 million in pre-seed funding to pioneer a fundamen...
Executive Summary France’s quantum sector entered a more public-market-facing phase in August 2026, with Pasqal dominating the headlines through its Nasdaq debut, technical progress and expansion into...
We show that gravitational curvature can control the generation of nonlocal quantum correlations in a hybrid qubit-mechanical device. The tidal field of a nearby source mass modifies the susceptibilit...
We formulate collider observables based on quantum steering ellipsoids (QSEs) for reconstructed bipartite systems of spin-$1/2$ particles. A collider spin density matrix defines a two-qubit state, whi...
Game theory studies strategic decision-making among rational agents, and many classical games can be mapped onto interaction models such as the Ising model. Quantum game theory extends this framework ...
Entanglement-based networks provide a scalable framework for multiuser quantum communication by passively routing spectrally correlated photon pairs across interconnected nodes. Several wavelength-all...
We derive a global bound on the sum of pairwise squared entanglement of formation in three-qubit systems. The bound is tight and can be saturated by states containing a maximally entangled bipartite p...
Quantum measurement and control software developer QuantrolOx (Espoo, Finland / Oxford, UK) has partnered with quantum education provider QURECA (Glasgow, UK) to launch the Quantum EDGE Academy. Integ...
Pessiland is a world where NP is hard on average but one-way functions (OWFs) do not exist [Impagliazzo 1995]. Because almost all classical cryptographic primitives imply OWFs [Impagliazzo and Luby 19...
Superconducting circuits play a crucial role in the advancement of quantum computing and quantum sensing. Typically such circuits require the presence of a non-linear element, where the engineered anh...
Quantum kernel methods lose their advantage over classical kernels once the encoding bandwidth is tuned, and bandwidth-tuned quantum kernels have been shown to resemble radial basis function kernels c...
We present FIREQ (FPGA Instrumentation for Readout and Qubit control), an open-source RFSoC-based framework for the control and readout of superconducting qubits. FIREQ combines a modular AXI-complian...
Since the seminal work of Selinger and Valiron, the standard design for quantum lambda calculi has kept the quantum state outside the program: terms manipulate pointers to an external register. This i...
Quantum Sky (formerly Tyto Athene, LLC) has appointed Sean Thompson as Chief Growth Officer (CGO). Thompson brings over 25 years of executive experience across defense and federal technology operation...
Intrinsic spin--orbit interaction in germanium provides electrically active flopping-mode qubits without requiring magnetic-field gradients to generate spin--charge hybridization. We study double quan...
IBM Quantum has officially launched Qiskit Fermions (v0.1.0), an open-source software library and transpiler extension designed to express fermionic operators, construct domain-specific fermionic circ...
Swiss fintech firm iAccess Partners and Basel-headquartered venture capital firm QAI Ventures have established a strategic partnership designed to broaden access to early-stage quantum technology and ...
Quantum key distribution (QKD) guarantees information-theoretic security by the laws of physics, but deployment at scale requires compact, manufacturable photonic terminals. Continuous-variable QKD (C...
Superpositions of macroscopically distinct coherent states, or cat states, are a key resource for quantum technologies. In particular, two-mode binomial cat states can give rise to exact quantum error...
Insider Brief Pasqal shares nearly doubled during the French quantum computing company’s first day of trading on Nasdaq, reflecting strong investor interest in one of Europe’s leading quantum hardware...
Yuval Boger interviews Michaela Eichinger, a product solutions physicist at Quantum Machines and the author of a widely read quantum computing newsletter. They discuss her transition from academia to ...
For a bipartite state $ρ$, information about the spectrum of its partial transpose $ρ^{Γ_B}$ can be inferred from measurements on multiple copies of $ρ$, without full state tomography. This raises a n...
Standard universal quantum computing using exchange-only qubits typically requires three physical spins per logical qubit, leading to significant hardware overhead. Conversely, two-spin units offer hi...
Photonic quantum computing developer Xanadu (NASDAQ/TSX: XNDU) has signed a definitive agreement with the Government of Canada securing CAD $195 million ($140.2 million USD) in federal funding through...
Planar $k$-uniform states have maximally mixed reductions on every $k$-site interval of a ring. We introduce planar $k$-purity---the mean purity of those intervals---as a faithful cost function for th...
Single electron spin qubits trapped in SiMOS quantum dots are a promising technology for scaling to thousand- or million-qubit systems due to their compatibility with mature CMOS manufacturing process...
Entanglement of purification is a fundamental measure of total correlations whose additivity remains unresolved. We study its additivity for classical states on two qubits at different Rényi orders. F...
Mechanical resonators ultrastrongly coupled to quantum two-level systems provide a promising route towards mechanical qubits by introducing significant anharmonicity to the mechanical modes, particula...
Variational quantum algorithms (VQAs) suffer from unstable optimization due to temporal noise drift and static qubit mappings that distort gradient signals across iterations. We present BAHAMAS, an on...
Insider Brief PRESS RELEASE – Xanadu Quantum Technologies Limited (“Xanadu”; NASDAQ/TSX: XNDU), a leading photonic quantum computing company, today announced it has signed a definitive agreement with ...
Insider Brief Italy’s highest administrative court has upheld the cancellation of a €61.2 million contract awarded to IBM Italia for the first quantum computer planned for the Campania region. The Cou...
Insider Brief PRESS RELEASE – New Mexico is offering matching funds to quantum companies pursuing DARPA’s Quantum Benchmarking Initiative (QBI) Stage C to bring that work to New Mexico. Economic Devel...
Quantum computers offer the potential to directly probe the dynamics of strongly coupled quantum field theories. As a step towards reaching this potential, local Krylov-based truncations of a pure SU(...
We introduce determinant quantum-quantum Monte Carlo (DQ$^2$MC), a quantum algorithm that lifts the auxiliary-field sampling and averaging at the operational core of determinant quantum Monte Carlo on...
We experimentally study error mitigation and finite-shot sampling on superconducting quantum hardware under a constrained execution budget. The study combines calibration-aware qubit selection, circui...
Quantum Reservoir Computing (QRC) processes temporal data by retaining a memory of past inputs in the recurrent state of a quantum system, whereas a Quantum Extreme-Learning Machine (QELM) discards th...
Nonlinear microwave resonators are a versatile tool in quantum information processing, enabling parametric amplification, continuous variable quantum computing, and engineered mode interactions. Many ...
The Energy Internet (EI) is a new concept aimed at enhancing the integration of renewable energy sources with the energy grid. Energy-efficient path selection in EI is NP-hard. This research presents ...
Neutral-atom quantum computing provider Pasqal has completed its previously announced business combination with special purpose acquisition company Bleichroeder Acquisition Corp. II (NASDAQ: BBCQ). Th...
Insider Brief A quantum computer depends on layers of hardware, control systems and software. As the technology moves from the laboratory into the commercial market, a legal layer is forming around it...
Insider Brief Andhra Pradesh Chief Minister N. Chandrababu Naidu has approved the establishment of India’s first dedicated Quantum and AI University campus in Amaravati, to be set up by the National I...
Using a numerically exact master equation, we demonstrate that two qubits, coupled solely through a shared damped, driven cavity, can become correlated. The drive influences both the amount and the ty...
Entangled photons play a crucial role in quantum applications, and determining and characterising their entanglement is vital to using them effectively. High-dimensional entangled states offer richer ...
Entanglement gives rise to correlations between distant quantum systems that cannot be explained by local realistic theories. Bell inequality violations provide a direct way to reveal these correlatio...
Guest Post by Kyle Okamoto, President of Axe Compute. When people talk about quantum readiness, the conversation often moves quickly to the quantum computer itself. How many qubits will we need? When ...
We investigate how the spatial arrangement of environment channel influences the dynamics of coherence and work extraction in a two-qubit quantum battery with resonant qubits coupled through an XY-exc...
Insider Brief IBM and IonQ use very different physical systems to build quantum computers. IBM uses superconducting circuits that must be cooled to extremely low temperatures, while IonQ traps charged...
Insider Brief PRESS RELEASE – Pasqal, a global leader in neutral-atom quantum computing, today announced the composition of the Board of Directors of Pasqal Holding SA (the combined company), followin...
Insider Brief QuEra Computing reported that an artificial-intelligence agent developed software that can restore a critical quantum computer laser system in seconds, potentially reducing the need for ...
Insider Brief PRESS RELEASE — When certain atoms are irradiated with laser light, they can produce laser pulses with extremely high frequencies in the X-ray range. Until now, the theoretical model of ...
Insider Brief PRESS RELEASE — Pasqal Holding SA (“Pasqal”), a global leader in neutral-atom quantum computing, and Bleichroeder Acquisition Corp. II (NASDAQ: BBCQ), a special purpose acquisition compa...
IonQ quantum information researchers Min Ye, Andrii Maksymov, and Nicolas Delfosse have published research on arXiv (arXiv:2608.25027) detailing an end-to-end real-time Quantum Error Correction (QEC) ...
Recent advances in the alternating-bias-assisted annealing (ABAA) technique have successfully mitigated intrinsic Josephson-junction (JJ) fabrication variations. This new technique enables precision q...
Quantum time-marching algorithms for transport PDEs often represent variable coefficients and forcing through register-expanding dilations, block-encoding oracles, or repeated postselection. We presen...
Bridgewater State University (BSU) has received approximately $380,000 from the Massachusetts Technology Collaborative (MassTech) to advance undergraduate quantum technology education, hands-on labora...
Paris-based quantum software startup ColibriTD has closed a €4 million ($4.66 million USD) Seed funding round led by Earlybird Venture Capital, with participation from SymbiaVC and Medin VC. The round...
Quantum DeepONet accelerates neural-operator inference by evaluating an orthogonally parameterized network on a quantum computer, reproducing in ideal simulation the accuracy of its classical counterp...
Illustration of the problem formalism and multi-basis encoding approach Researchers from Singapore’s Agency for Science, Technology and Research (A*STAR) and the National University of Singapore (NUS)...
Understanding real-time flux-tube dynamics in more than one spatial dimension is key to unlocking the non-perturbative physics of confinement, and is now actively pursued by quantum computing and simu...
We study how virtual next-to-leading-order electroweak corrections affect the quantum observables of entanglement and magic in lepton--lepton collisions. Treating the outgoing particles as multi-qudit...
Maximally mixed state spectral sampling is an unbiased quantum algorithm that allows for extraction of a finite-resolution spectral distribution from a Hamiltonian over potentially the entire allowed ...
The physics of information scrambling in quantum many-body systems is intimately related to thermalisation and emergence of chaos. However, its standard characterisation through bipartite entanglement...
Rydberg entangling gates driven by a two-photon transition in alkali atoms suffer from an adverse scaling of light-shift-induced errors. Robustness to such detuning errors is known to be impossible to...
In several articles, the authors assume that the convex roof structure of the EoF and finite-dimensionality of subsystems $A$ and $B$ guarantee the existence of the (global) supporting affine function...
The prepare-and-measure framework based on energy constraints offers a practical middle ground between fully device-dependent and device-independent quantum cryptography. The only assumption on an oth...
We present a systematic design for large-scale quantum kernel classification, demonstrated through a quantum support vector classifier (QSVC) for particle-track classification using centroid-based CLA...
Insider Brief Press release – Cardiovascular disease remains a major global health challenge, causing millions of deaths each year and imposing substantial healthcare costs. Early, accurate diagnosis ...
Insider Brief Press release – Bridgewater State University has received approximately $380,000 from the Massachusetts Technology Collaborative (MassTech) to expand undergraduate education and research...
We determine the strong converse exponent for the entanglement cost of quantum state merging, showing that it is characterized by the optimized $α$-$z$ conditional Rényi entropies with $z=α/2\in[1/2,1...
Insider Brief Press release – Infleqtion (NYSE: INFQ), a global leader in quantum computing and quantum sensing powered by neutral-atom technology, today announced NASA has awarded the company a $20 m...
Insider Brief PRESS RELEASE — Q-CTRL, the global leader in quantum infrastructure software, today announced a major milestone in real-world quantum sensing deployments. In a world-first field demonstr...
Insider Brief PRESS RELEASE – The first quantum-resistant Bitcoin transaction has been successfully executed. A first-of-a-kind transaction on Bitcoin mainnet made funds that had been vulnerable to qu...
Insider Brief A team of Singapore-based researchers reports that a hybrid quantum-classical method could offer a new route to studying drug candidates using today’s Noisy Intermediate-Stage Quantum (N...
Insider Brief Press release – ColibriTD, the French quantum software company specializing in multiphysics simulation, today announced the closing of a €4M Seed round led by Earlybird Venture Capital, ...
Insider Brief Press release – Atsign today announced the integration of NIST-approved, Post-Quantum Cryptography (PQC) across its core SDKs. The integration gives developers and enterprise teams a zer...
Italy’s Consiglio di Stato (Section Five) has rejected an appeal by the Campania Region and IBM Italia, upholding the lower administrative court's decision to annul a €61.2 million public tender for a...
Researchers from the University of Padova, Italian photonics firm ThinkQuantum s.r.l., and the National Research Council of Italy (CNR-IFN) have published a real-time field trial of an intermodal quan...
Post-quantum semiconductor and digital identity developer SEALSQ Corp (NASDAQ: LAES) has announced an engineering update on QASIC (Quantum-Resistant Application-Specific Integrated Circuit), its sover...
Tel Aviv-based quantum technology developer Quantum X Labs Inc. (Nasdaq: QXL) has launched Qatacomb, a research initiative operating through its QuantumQ Security unit. The program is designed to expl...
Rydberg-based two-qubit gate fidelities in neutral atom arrays are limited chiefly by laser intensity inhomogeneity and by detuning errors from frequency miscalibration, background-field drift, interm...
While quantum computing could be the future, it is currently plagued by finicky hardware. To make the technology practical, researchers must demonstrate that it consistently and continuously works and...
The pursuit of a quantum theory of gravity, aiming to unify general relativity and quantum mechanics, remains one of the most enduring challenges in physics. Because of the extreme energy scales assoc...
Accurately estimating expectation values of observables from a finite number of measurement shots is a central challenge in quantum information science. Informationally overcomplete measurements provi...
The threshold theorem states that quantum computations can be made reliable below a physical error threshold, at the cost of additional physical qubits and circuit depth. Recent work has reduced these...
The Koopman-von Neumann framework has been proposed to design quantum algorithms for non-linear dynamics. It maps a non-linear ordinary differential equation to a linear partial differential equation ...
Counting processes provide a fundamental description of stochastic events ranging from photon detection to clock ticks. A central question is how accurately such events can be timed when only finite m...
We show that the $d+0$-dimensional Yang-Lee theory describing classical Ising spins in an imaginary magnetic field can be realized, without post-selection, within a $(d-1)+1$ open quantum system whose...
Frequency encoded photonic qubits promise a scalable path towards high-dimensional quantum information processing, but require efficient components for coherently mixing frequency modes. Coupled cavit...
Noise-biased qubits have bit-flip errors that are exponentially suppressed relative to phase-flip errors, and offer a promising route toward fault-tolerant quantum computing. However, this bias can be...
Nonstabilizerness, or magic, is an archetypal \emph{quantum} resource that is necessary for quantum computational advantage. Here we uncover a phenomenon seemingly at odds with the quantum nature of m...
Insider Brief Press release – Sparrow Quantum has announced that the company is one of 13 selected for funding under the EuroHPC Joint Undertaking’s Quantum Grand Challenge, an EU program created to a...
The defining feature of one-sided device-independent quantum key distribution is its asymmetric trust model in which only one party is characterized. This scenario sets an interesting middle ground be...
Compressively strained Ge quantum wells in planar SiGe/Ge heterostructures are the state-of-the-art platform for hole spin qubits. While they exhibit robust coherence times, they possess weak intrinsi...
Distributed architectures extend quantum simulation of many-body dynamics beyond the reach of any single processor, with shared entanglement mediating interactions between spatially separated devices....
IBM (NYSE: IBM) has officially completed its acquisition of Malibu-based research and development institution HRL Laboratories, LLC (HRL). The transaction brings HRL’s deep expertise in silicon-spin q...
Silicon quantum computing developer Diraq has officially opened its U.S. Technology Hub in Santa Monica, California. Launching with a 20-person engineering team, the new facility targets integrated ci...
Insider Brief Press release – Quantum X Labs Inc. (Nasdaq: QXL) (“QuantumX Labs” or the “Company”), today announced the launch of Qatacomb, a new research initiative being advanced through the Company...
Strained germanium ($\varepsilon$-Ge) quantum wells on metamorphic SiGe buffers have enabled advanced hole-based spin qubit devices. Alternatively, unstrained Ge with lattice-matched strained silicon-...
Insider Brief Press release – IBM (NYSE: IBM) today announced it has completed its acquisition of HRL Laboratories, LLC (HRL), a leading research and development institution whose expertise spans quan...
Insider Brief Researchers demonstrated quantum key distribution across an 18-kilometer free-space link by using adaptive optics to counter atmospheric turbulence and connect the signal to conventional...
Insider Brief Press release – A scientific quest to build more accurate clocks, faster computers and new sensors to detect the faintest signs of disease and disaster is getting a $37.5 million financi...
Insider Brief When voters head to the polls, a ballot is designed to be as simple as possible. A voter makes a choice, the choice goes into the count and, whatever disputes follow, the mark on the bal...
Insider Brief PRESS RELEASE — The second international Quantum Datacenter Alliance (QDA) Forum will be held on October 1, 2026 at Battersea Power Station in London. This exclusive-access event brings ...
Insider Brief PRESS RELEASE — Scientists could have a new way to explore the hidden behaviour of matter, thanks to research involving Queen Mary University of London that uses a quantum computer to ca...
Insider Brief Press release – D-Wave Quantum Inc. (NASDAQ: QBTS) (“D-Wave” or the “Company”), the only dual-platform quantum computing company providing both annealing and gate-model systems, software...
Insider Brief Press release – A Yale-led multidisciplinary team of researchers has been awarded a $37.5 million grant from the U.S. National Science Foundation (NSF) for a center aimed at designing pr...
Insider Brief Press release – Recently, DOE announced $7.3 million in funding for eight projects that will explore the application of quantum information science and technology to new experiments and ...
Insider Brief Press release – The U.S. National Science Foundation has renewed the University of Illinois Urbana-Champaign-led NSF Quantum Leap Challenge Institute for Hybrid Quantum Architectures and...
Insider Brief Press release – Photonic Inc.’s paper on SHYPS quantum error correction codes, “Computing Efficiently in QLDPC Codes,” has been published in the journal Nature Communications. Quantum Lo...
Insider Brief Press release – An international team of researchers is developing technology to enable long-range quantum networks. The University of Strathclyde is leading AL FreSQO (Atom-Light Free-S...
Insider Brief Press release – Diraq, the silicon quantum computing pioneer, today announced the opening of its U.S. Technology Hub in Santa Monica, California. The hub brings together a 20-strong mult...
Qubit-efficient quantum relaxations compress classical decision variables into expectation values on substantially fewer qubits. We ask what resource tradeoffs this compression entails for quantum opt...
The U.S. Department of Energy (DOE) has announced $7.3 million in total funding for eight multi-institutional research projects under its "Quantum Outposts on the Energy and Intensity Frontiers" initi...
Decoherence imposes severe limits on quantum circuit depth, motivating methods to reduce circuit depth. Operator backpropagation has recently been proposed as a way to lower circuit depth by classical...
As quantum computers advance toward the regime of MegaQuOp machines executing millions of gates, a decoding system capable of real-time error correction in such a device will be crucial. Recent effort...
Quantum simulation of strongly correlated fermionic systems is among the most promising near- term applications of quantum computing, but its practical efficiency depends critically on the choice of f...
Insider Brief Press release – Understanding and wielding the quantum properties of nature is the ambitious objective of eight research institutes that will collectively receive more than $290 million ...
Programmable quantum devices nominally act on a Hilbert space whose dimension grows exponentially with the number of constituents, but the presence of noise makes it unlikely that they remain coherent...
We experimentally investigate how symmetry-protected topological order in a one-dimensional cluster state is transformed by measurement and decoherence in a five-qubit superconducting array. We first ...
Insider Brief Press release – The U.S. National Science Foundation announced today that Princeton University will lead one of eight major initiatives to accelerate the development of quantum computing...
The General Services Administration (GSA) and the U.S. Department of the Treasury have announced dual initiatives to accelerate post-quantum cryptography (PQC) deployment across federal identity manag...
Correlations allowed by quantum mechanics can defy any classical explanation, with Bell nonlocality standing as their most profound and operationally powerful manifestation. While nonlocality has been...
Sheffield-based post-quantum cybersecurity specialist Sitehop has launched a dedicated national security unit aimed at protecting legacy defense infrastructure across the UK and its Five Eyes intellig...
Photonic quantum computing developer Xanadu (NASDAQ/TSX: XNDU) and Japanese chemical manufacturer Mitsubishi Chemical have announced the second phase of their joint R&D partnership to advance semicond...
Insider Brief Press release – IonQ (NYSE: IONQ), the world’s leading full-stack quantum platform and foundry, today announced the appointment of two new board members: technology finance expert Dr. Er...
Insider Brief Press release – The U.S. National Science Foundation has renewed the Quantum Leap Challenge Institute for Quantum Sensing for Biophysics and Bioengineering (NSF QuBBE) with a $37.5 milli...
Insider Brief Press release – Pasqal, a global provider of neutral-atom quantum computers, today welcomed a delegation of senior leaders from the Kingdom of Saudi Arabia (the “Kingdom”), led by His Ex...
Two teams implement entanglement-based protocol The post Quantum voting system aims to keep ballots secret appeared first on Physics World .
Insider Brief A Washington University in St. Louis biologist is applying theories about how the brain balances order and chaos to a Department of Energy project aimed at making quantum sensors more ac...
Insider Brief Press release – Xanadu Quantum Technologies Limited (“Xanadu“; NASDAQ/TSX: XNDU), a leading photonic quantum computing company, has announced the next phase of its collaboration with Mit...
Insider Brief PRESS RELEASE — As the Administration advances its updated Cyber Strategy [PDF] and new Executive Order on Ushering in the Next Frontier of Quantum Innovation, GSA’s Office of Government...
For photonic quantum technology applications, sources capable of emitting photons with indistinguishability close to unity are essential. Ideally, these sources should not require demanding cooling sy...
Gate teleportation allows us to implement a nonlocal unitary using local operations, classical communication (LOCC), and a shared entangled state. Known deterministic teleportation protocols consume a...
Insider Brief Press release – Finnish independent game studio MiTale will showcase its upcoming post-apocalyptic role-playing game C.L.A.Y. – The Last Redemption at Gamescom 2026 in Cologne this week....
In distributed fault-tolerant quantum computing, entanglement and magic are essential resources for quantum communication and universal fault-tolerant computation, respectively. Although they are usua...
Sunlight may provide an energy-efficient alternative to lasers used in quantum computing The post Researchers harness sunlight to generate quantum entanglement appeared first on Physics World .
Insider Brief PRESS RELEASE — Our everyday life is flooded with photons, the quantum building blocks of light. For cutting-edge technology, from quantum computing to deep-tissue imaging, detecting eve...
Insider Brief PRESS RELEASE — The U.S. Department of the Treasury today announced the launch of the Quantum-Readiness Task Force, following President Donald J. Trump’s Executive Order 14412 establishi...
Fast, precise, and quantum-non-demolition (QND) readout of superconducting qubits is a fundamental component of high-fidelity quantum sensing and computation. Conventional approaches typically operate...
Insider Brief Press release – Infleqtion (NYSE: INFQ), a global leader in quantum computing and quantum sensing powered by neutral-atom technology, has helped Japan reach a major quantum milestone, su...
Insider Brief Press release – The EuroHPC Joint Undertaking (EuroHPC JU) has launched six new calls to advance strategic quantum technologies and the infrastructure needed to accelerate the developmen...
Who’s Playing, Who’s Ahead, and What It Means Insider Brief A year ago, quantum computing read like a research story. Here was a technology that might eventually matter. Now, things are getting very, ...
Although quantum error correction is widely believed to be necessary for impactful applications of quantum computers, the design of quantum error correction codes is largely done by hand, without resp...
Owing to their high controllability and connectivity, one-dimensional ion chains are attractive building blocks for near-term quantum computers. However, long ion chains are susceptible to motional he...
The Institute for Molecular Science (IMS), part of Japan's National Institutes of Natural Sciences (NINS), has announced that Japan’s first full-stack neutral-atom quantum computer, named "Shunkai" (春...
Optimized daemonic ergotropy can make entanglement thermodynamically dispensable in measurement-assisted work extraction: for a fixed system marginal, quantum-classical states can reproduce the maxima...
The Responsible Fintech Institute (RFI) and digital asset security provider Safeheron have launched a cross-border post-quantum cryptography (PQC) pilot to evaluate quantum-resilient digital asset tra...
Space-based optical communications developer Skyloom Global—a subsidiary of IonQ (NYSE: IONQ)—has deployed dozens of additional Optical Communication Terminals (OCTs) into low-Earth orbit (LEO). Launc...
Neutral-atom quantum computing developer Pasqal and Saudi Arabian investment platform Eleven Ventures have signed an agreement to establish a commercial joint venture—Pasqal Arabia—to deploy, commerci...
Translating observed data into a reliable estimate of the secure key rate is a crucial step for operating a quantum key distribution device. We provide a computational method for this task that only r...
Quantum Monte Carlo (QMC) methods are among the central numerical tools for studying strongly correlated quantum many-body systems, particularly in higher dimensions. As quantum information has introd...
Insider Brief Press release – Pasqal, a global leader in neutral-atom quantum computing, and Eleven Ventures, a Kingdom of Saudi Arabia based investment platform and venture capital firm, today announ...
Insider Brief Sweden has laid out a decade-long plan to turn its strong quantum research base into a more coordinated industry while preparing government and businesses for the security risks posed by...
The Vlasov--Poisson system provides the fundamental kinetic description of plasma and plays a central role in understanding collective phenomena such as Landau damping and wave--particle interactions....
We introduce a novel physics-guided linear mapper (PGLM) for quantum error mitigation that uses seven distinct interpretable features derived from circuit complexity and device calibration data. The g...
Accurate identification of unknown quantum systems is essential for quantum computing, sensing, and control because the Hamiltonian governs quantum state evolution. This work proposes a QNN based fram...
Insider Brief Press release – The Responsible Fintech Institute (RFI) and Safeheron have launched a pilot initiative to evaluate post-quantum cryptography for digital asset transactions, with particip...
Insider Brief China has identified quantum technology as one of a group of frontier fields targeted for development under a new five-year plan aimed at strengthening the country’s cybersecurity and in...
Insider Brief PRESS RELEASE — Institute for Molecular Science (IMS), National Institutes of Natural Sciences, announced on Aug. 24 that Japan’s first full-stack neutral-atom quantum computer “Shunkai,...
Multi-photon interference can be observed using independently generated photons as input. In the most simple case, these photons meet up at a beam splitter, resulting in quantum interference between t...
Gate synthesis and circuit optimization are usually studied separately, and evidence on their interaction is contradictory: ZX-calculus rewriting removes a stable fraction of Solovay-Kitaev circuits, ...
The Boltzmann-Loschmidt dispute in 1876-1877 discussed the problem of time reversal of ther- malization from time reversible classical equations of motion. Here, 150 years later, we highlight this pro...
Insider Brief PRESS RELEASE — Researchers at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory and the State University of New York at Stony Brook (Stony Brook University) have succ...
Electron microscopes are used wherever particularly small details need to be imaged. But from a strictly physical point of view, every electron in a conventional electron microscope represents a misse...
Dicke states $|J=N/2,m\rangle$ of a collection of $N$ atoms were central to Dicke's theory of superradiance. Except for the fully polarized end states, they are entangled many-body states; in particul...
D-Wave Quantum Inc. has appointed Kevan P. Krysler to its Board of Directors and Audit Committee. Krysler currently serves as Chief Financial Officer of Carbon Robotics and brings over two decades of ...
qiskit-qudits is a Qiskit extension that simulates d-level qudits by encoding each one into m = ceil(log_2 d) qubits. Qudit gates are exposed as ordinary Qiskit Gate and ControlledGate subclasses, and...
Scalable quantum networks require generating remote entanglement faster than decoherence erases it, calling for nodes that combine efficient light-matter interfaces with long coherence times. Cavity-c...
Microscopic two-level system (TLS) defects remain a primary mechanism of decoherence and operational instability in superconducting transmon qubits, necessitating scalable and automated methods for th...
Polar molecules trapped in optical tweezer arrays offer a promising platform for quantum information processing, providing precise control and long-range interactions that enable high-fidelity gate op...
We present a route-resolved comparative assessment of Rigetti's Cepheus-1-108Q and IBM Heron-r2 processors using the established 'do-nothing' state-transfer protocol. Rather than proposing a new proto...
Conventional Quantum Key Distribution (QKD) requires the transmission of qubits proportional to or exceeding the length of the key, as protocols such as BB84 transmit more qubits than the final key si...
Quantum processors encode an N-point field in log_2(N) qubits, which renders nonlinear wave equations an important application for quantum simulation. Nonlinear evolution, however, requires the field ...
Germanium hole spin qubits are a leading platform for semiconductor quantum computation due to their strong spin-orbit coupling, all-electrical operability, and absence of valley degeneracy. A central...
Stabilizer states play a central role in quantum information theory, and understanding their entanglement has motivated a large body of work. A well-studied question in particular is when a stabilizer...
Precise measurement of the resonance frequencies of microwave and optical cavities is a foundational capability across quantum technologies. One of the highest-performance methods currently available ...
Quantum state ensembles are important in quantum information processing. For example, quantum $t$-designs model highly entangled states in complex systems, while projected ensembles appear in generati...
Insider Brief Every quantum computer commercially available today belongs to the same category. Whether it is IBM‘s quantum systems, Google‘s superconducting processors, or IonQ‘s trapped-ion hardware...
Quantum software developer Quantum X Labs Inc. (Nasdaq: QXL) has announced new performance results from its AI-driven quantum error correction (QEC) decoder program. Testing its updated model against ...
Bell-state measurements are essential ingredients in many protocols for quantum information processing, ranging from quantum teleportation and dense coding to entanglement distribution in quantum netw...
We study quantum dynamics through the lens of entanglement generation and characterize the underlying unitary evolution by the distinct signatures it imprints on the time-dependent entangling power. F...
Applying controlled unitary gates to generate entanglement between qubits is a routine task in both quantum communication and computation. The existing tools for predicting how much entanglement a giv...
Quantum error mitigation (QEM) is at the very heart of near-term quantum simulations and lattice gauge theories are no exceptions, rather their physical symmetries provide natural consistency checks o...
Classical computation is more accurate that quantum annealer for some Ising spin glasses The post No quantum advantage (yet) in the world of tensor networks appeared first on Physics World .
Insider Brief Press release – Quantum X Labs Inc. (Nasdaq: QXL) (“Quantum X” or the “Company”), an advanced technologies company, today announced new results from its AI-driven quantum error-correctio...
The exact Toffoli gate admits a six-CX decomposition, denoted by $CCX_6$, that is optimal under unrestricted two-qubit connectivity. On a linear three-qubit topology, however, $CCX_6$ contains 4 neare...
Insider Brief Press release – QC Ware, the organizer of Q2B conferences and a developer of computational chemistry and quantum computing software, has announced that the 2026 Q2B Copenhagen Conference...
Insider Brief Press release – Canadian cybersecurity company Crypto4A Technologies Inc. has achieved a global first in the race to protect governments, financial systems, critical infrastructure and d...
We provide a perspective into measuring the quantum information spreading by introducing N-operator correlators. Leveraging the idea from N-point correlation function from cosmology, we formulate a ge...
Insider Brief Quantum computing might have a user problem as well as a hardware problem, according to a new study that identifies 11 types of people likely to interact with quantum software. The resea...
Insider Brief Press release – Researchers, software developers and technology leaders from across the global quantum computing ecosystem gathered at the Department of Energy’s (DOE) Oak Ridge National...
Canadian cybersecurity developer Crypto4A Technologies Inc. has received NIST FIPS 140-3 Level 3 validation for QASM™, the core cryptographic module integrated into its QxHSM™ hardware security module...
Sparse quantum state preparation concerns an $n$-qubit target state that is a superposition of only $d \ll 2^n$ computational basis states. Existing approaches exploit this sparsity by compressing the...
Researchers at the FAMU-FSU College of Engineering and the National High Magnetic Field Laboratory, headquartered at Florida State University, have designed a new quantum computing architecture that u...
Insider Brief North Texas in mid-August makes a persuasive case for staying indoors, which is indeed what the state’s quantum community did for two days at the University of Texas at Dallas. Registrat...
Superconducting quantum hardware developer Rigetti Computing, Inc. (Nasdaq: RGTI) has reorganized its operating structure to separate commercial system deployments from core quantum processor R&D. The...
Quantum computing is entering a transitional regime between noisy intermediate-scale quantum (NISQ) processing and early fault-tolerant quantum computation (FTQC), in which increasingly capable hardwa...
Aaronson and Ambainis (Theory of Computing, 2014) conjectured that quantum query algorithms admit efficient almost-everywhere classical simulation: for any $T$-query quantum algorithm, its acceptance ...
Strong atom-photon interactions in optical cavities are a key resource for quantum information processing, quantum networking, and the exploration of quantum optical effects. Optical tweezer arrays of...
A $U(1)$ quantum rotor pairs a periodic angle with an integer-valued conjugate momentum, and occurs in molecular rotation, superconducting phase-charge circuits, and compact gauge fields. Coupling suc...
Many mainstream quantum programming languages confine higher-order structure to a classical host while restricting the quantum layer to first-order operations on qubits. This paper presents Granthi, a...
Non-unital noise is a fundamental feature of open quantum systems, governing energy exchange and inducing state translations on the Bloch sphere. While such translations can be useful for tasks such a...
Identifying the entanglement structure of a many-body quantum state, namely how its constituents partition into unentangled blocks, is a central task in quantum information science, yet conventional t...
Achieving fault-tolerant quantum computing at a practical scale demands quantum error correction (QEC) codes with high encoding rates. Quantum low-density parity-check (qLDPC) codes emerge as a promis...
Large Fock states are important resources for bosonic quantum information and quantum-enhanced metrology, but preparing them with high probability at large excitation numbers remains challenging, as d...
Insider Brief Press release – Bleichroeder Acquisition Corp. II (Nasdaq: BBCQ) (“Bleichroeder”) will hold a shareholder vote on August 25, 2026 to consider the proposed business combination with Pasqa...
Quantum networks will combine optical fibre with free-space links, yet continuous-variable quantum key distribution (CV-QKD) has been developed predominantly for one medium or the other, while operati...
Quantum computing is a quickly growing field that is promising various advantages compared to conventional computing. However, currently stand-alone quantum applications are scarce and hybrid (quantum...
We study bipartite entanglement from the convex geometry of quantum states. Taking the maximally mixed state as a reference point, we define a geometric entangled-space quantity $G(ρ)=[1-L(ρ)]/L(ρ)$ f...
Insider Brief Press release – Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti”), a pioneer in full-stack quantum computing, today announced a new operating structure designed to scale deployment of o...
Insider Brief Press release – FormationQ and the Hartree Centre, part of the Science and Technology Facilities Council (STFC) and UK Research and Innovation (UKRI), today announced a strategic partner...
Insider Brief Press release – The State of New Mexico and the City of Albuquerque are backing the expansion of Quantinuum, a leading quantum computing company, further establishing Albuquerque as a na...
Insider Brief European technology group GMV is expanding its quantum technology efforts across computing, communications, space, sensing and cybersecurity. It’s a portfolio approach that positions the...
Insider Brief PRESS RELEASE — When different materials transition from one phase to another, such a water coming to a boil or a magnet losing its ability to attract metals, something remarkable can ha...
We develop a quantum algorithm for solving the dynamics of the nonlinear viscous Burgers equation. We apply the Carleman linearization procedure on the spatially discretized equation, followed by a pa...
Bit threads, arising as the convex dual of the minimal-surface formula for holographic entanglement entropy, are line-like structures with nontrivial bulk trajectories. Their physical picture has long...
These notes develop four interconnected ways of reading a quantum circuit. A circuit for us begins as an operational composition of gates; then, it becomes a diagram whose local equalities may be used...
We investigate quantum thermometry in Ohmic-type reservoirs using two-qubit probes within an exactly solvable pure-dephasing framework. By analyzing the individual variance associated with temperature...
Mid-circuit measurements provide direct access to trajectory-level observables, revealing dynamical structures in many-body systems that are invisible in ensemble-averaged quantities. We exploit this ...
Quantum state transfer on qubit lattices is a crucial step in a panoply of quantum information processing tasks. Understanding its fundamental limits in the presence of practical imperfections remains...
Given a set of input states, we consider the task of predicting the expectation value of a Pauli observable at the output of an unknown quantum evolution, using only a limited number of measurements. ...
The practical implementation of quantum algorithms on noisy intermediate-scale quantum devices encounters operational limitations due to decoherence and other sources of noise inherent in real hardwar...
Calderbank-Shor-Steane (CSS) codes, constructed from nested classical codes $C_2 \subseteq C_1$, are typically optimized for good code parameters. However, practical quantum computing equally demands ...
A research team led by Cornell University Assistant Professor Valla Fatemi has developed a low-temperature fabrication process for tantalum-based superconducting qubits, resolving a major manufacturin...
We introduce Bernstein-Vazirani Networks (BVNs), a non-variational quantum machine learning framework that leverages quantum interference for supervised learning, demonstrated on vision and representa...
Quantum technology developer EigenQ, Inc. and special purpose acquisition company Silicon Valley Acquisition Corp. (Nasdaq: SVAQ) have confidentially submitted a draft registration statement on Form S...
Practical fault-tolerant quantum computing (FTQC) requires efficient lattice surgery (LS), so that large algorithms fit on resource-constrained quantum chips. Existing approaches, however, are rigid: ...
Silicon spin-qubit hardware developer Diraq has opened its first U.S. research and measurement laboratory in Chicago, Illinois. Situated within the Illinois Quantum and Microelectronics Park (IQMP) On...
Insider Brief PRESS RELEASE — Diraq, the quantum computing pioneer, has opened its first U.S. laboratory in Chicago as part of the Illinois Quantum and Microelectronics Park’s (IQMP) On-Ramp program a...
Two connected modular cryostat prototypes operating in Poughkeepsie, NY. IBM (NYSE: IBM) has announced the successful linking and cooldown of its first modular cryogenic cells, completing a key hardwa...
Clifford circuits play a foundational role in quantum computing, particularly due to their importance in quantum error correction and fault-tolerant logical synthesis. While these circuits can be effi...
The sensitivity of quantum sensors is fundamentally constrained by the standard quantum limit (SQL) arising from intrinsic quantum fluctuations. While non-classical resources like squeezing or entangl...
MOU establishes IonQ as a listed provider for the FABrIC Quantum Computing Sandbox, accelerating quantum research and enterprise adoption.
Insider Brief Press release – IBM (NYSE: IBM) today announced it has successfully joined and cooled down two cryogenic modules into a single environment. The new architecture is designed to scale into...
Surface acoustic wave-based resonators are sensitive probes of condensed matter systems, as well as surface-selective sensors for chemistry and biology. Surface acoustic wave devices have also been in...
Insider Brief Press release – Allot Ltd. (NASDAQ: ALLT) (TASE: ALLT), a leading global provider of innovative security-as-a-service (SECaaS) and network intelligence solutions for communication servic...
Insider Brief PRESS RELEASE — To commercialize quantum computing, manufacturers need high-quality superconducting materials for microchips, but they also require a reliable, sustainable nanofabricatio...
Insider Brief PRESS RELEASE — IonQ (NYSE: IONQ), the world’s leading quantum platform company, today announced a collaboration with Canadian Microelectronics Corporation, operating as CMC Microsystems...
Guest Post by Animesh Datta, Professor of Quantum Information Science, University of Warwick, for The Conversation In the global race to build bigger and better quantum computers, researchers have tak...
Cybersecurity technology developer Eclypses has selected IT solutions integrator Sterling to deliver its patented MicroToken Exchange® (MTE) platform to U.S. federal government agencies. The strategic...
Neutral-atom quantum technology developer Infleqtion (NYSE: INFQ) has inaugurated the Colorado Quantum Innovation Center (CQIC), its new global headquarters located at 1315 W. Century Drive in Louisvi...
Trapped-ion quantum computing developer Quantinuum is expanding its operational presence in Albuquerque, New Mexico, supported by a joint $1.5 million USD state and municipal incentive package. The fu...
Trapped-ion quantum computing hardware developer IonQ (NYSE: IONQ) has signed a Memorandum of Understanding (MOU) with CMC Microsystems to integrate its commercial quantum systems into Canada’s FABrIC...
This paper extends a recently proposed Variational Quantum Algorithm framework for nonlinear elasticity to a broader class of constitutive nonlinearities involving rational powers of the stretch. One-...
Pauli Check Sandwiching (PCS) is a quantum error detection (QED) technique that protects a quantum circuit by utilizing a pair of controlled Pauli operators, or checks, and detecting errors that anti-...
Insider Brief PRESS RELEASE — Eclypses, a cyber leader redefining data security for the AI and quantum era, today announced that it has selected Sterling, an award-winning Global Solutions Integrator,...
Teleporting unknown quantum states between distant nodes of a network is a significant feature of quantum communication. Few studies, however, have been conducted on $N \to M$ telecloning, in which $N...
Quantum software and materials discovery company OTI Lumionics, in collaboration with the Samsung Advanced Institute of Technology (SAIT), has published research benchmarking its proprietary Iterative...
Investment firm Texas Quantum Partners and Texas real estate developer Samara have unveiled the architectural master plan and operational site details for Occam Foundry, a dedicated 16.5-acre quantum ...
As quantum processors scale to hundreds of qubits, execution speed is a critical performance dimension alongside scale and quality. While substantial progress has been made in benchmarking circuit fid...
We study the dissipative dynamics of a Majorana tetron qubit in the presence of extrinsic quasiparticle poisoning due to the coupling to external leads. From the Bloch-Redfield equation describing a f...
Insider Brief Press release – Infleqtion (NYSE: INFQ), a global leader in quantum computing and quantum sensing powered by neutral-atom technology, is celebrating the grand opening of the Colorado Qua...
The familiar Bethe-Heitler process on the proton target $e+p\to e+p+γ$ is transformed into a laboratory for studying multiparticle entanglement. We discuss how bipartite and genuine tripartite entangl...
Neutral-atom arrays are emerging as a leading platform for scalable quantum error correction (QEC). Qubits are routed and reused across the array, while detected loss is reported to the decoder as era...
In fault-tolerant quantum computing systems with biased noise, Clifford deformation can substantially reduce the logical error rate (LER) without additional physical hardware overhead, such as extra q...
Erbium ions (Er$^{3+}$) in cerium dioxide (CeO$_2$) represent a promising spin-photon interface for quantum communication, but the mechanisms limiting their optical coherence remain poorly understood....
High-harmonic generation (HHG) is conventionally understood to produce attosecond pulse trains only when the emitted harmonics are mutually phase-locked, in accordance with the classical theory of mod...
Japanese telecommunications operator NTT DOCOMO has deployed its second commercial, production-grade quantum application powered by D-Wave Quantum Inc. (NASDAQ: QBTS). Operating on D-Wave’s hybrid qua...
Insider Brief Press release – U.S. Senators Chris Coons (D-Del.) and Mike Rounds (R-S.D.) introduced the Quantum Grid Utility Assurance and Resilient Defense Act of 2026 (Quantum-GUARD Act) to strengt...
Energy shifting is usually trivial in imaginary-time evolution because it changes only the normalization of the evolved state. On a quantum computer, however, imaginary-time evolution can be implement...
Insider Brief PRESS RELEASE — Texas Quantum Partners and Samara, a Texas real estate developer, today announced Occam Foundry, a quantum technology campus taking shape in Austin. The site is owned, th...
Insider Brief PRESS RELEASE — OTI Lumionics, a leader in advanced quantum simulations and solutions for next-generation materials discovery, in collaboration with the Samsung Advanced Institute of Tec...
Guest post by Professor Callum Littlejohns, Deputy Director at CORNERSTONE, and Dr Amit Agrawal, Associate Professor in Optical Engineering at the University of Cambridge The ability to scale is one o...
The quantum approximate optimization algorithm (QAOA) targets NP-hard maximum-likelihood (ML) detection in multiple-input multiple-output (MIMO) systems. Existing $M$-ary quadrature amplitude modulati...
Insider Brief Press release – D-Wave Quantum Inc. (NASDAQ: QBTS), the only dual-platform quantum computing company providing both annealing and gate-model systems, software and services, and NTT DOCOM...
We develop a quantum algorithm for slow analytic Hamiltonians $\widetilde H(t)=H(t/T)$ with $\|H(s)\|\leqα$ that achieves nearly additive query complexity and low gate overhead. Our main technical con...
Noisy Bell mixtures may carry entanglement, standard teleportation usefulness, projective-measurement steerability, and optimized Cavalcanti-Jones-Wiseman-Reid (CJWR) and Clauser-Horne-Shimony-Holt (C...
Variational quantum sensing offers a promising route to high-precision parameter estimation, but its performance depends strongly on the circuit architectures used for probe preparation and measuremen...
Textbook quantum superposition refers to the feature that certain linear combinations of Hilbert space rays, each representing a valid quantum state, are themselves valid states. This notion is not op...
Insider Brief Chicago Mayor Brandon Johnson faced sharp opposition from Southeast Side residents Saturday over a planned $9 billion quantum computing development, as activists pressed him to withdraw ...
We systematically characterize quantum entanglement in all sixteen combinations of two-qubit Bell states across three operational regimes: pure superposition, noiseless mixing, and asymmetric mixing o...
Insider Brief China is testing quantum sensors, secure communications and computing in a working power substation, examining how the emerging technology could be applied to the country’s electrical gr...
Multipartite entanglement remains a challenging and not fully understood aspect of quantum information. Monogamy-of-Entanglement (MoE) games have been highly effective for studying limitations on the ...
Neutral-atom arrays have rapidly advanced to support thousands of qubits and execute high-fidelity logical operations. However, these processors remain severely throttled by their slowest fundamental ...
Insider Brief Humanity’s ability to make things has dictated its progress over the ages. From the Stone Age to the Bronze and the Iron Age, we have leaped from one material to the next, each letting u...
Federated deployments of variational quantum classifiers are attractive for cross-organisation risk prediction in supply chains, because raw data never leaves the client, yet data-protection regulatio...
Quantum computers are noisy; without quantum error correction (QEC), deep programs fail as qubits lose information due to decoherence. Among QEC approaches, bivariate bicycle (BB) codes offer low over...
Superconducting circuits (SCs) are the cornerstone of modern quantum technology, enabling scalable computing through coherent control of macroscopic quantum states. Through a legacy that predates mode...
In this episode, Yuval Boger speaks with Rob Jesudason, CEO and founder of Serendipity Capital, a $1.3 billion permanent capital vehicle investing in quantum computing, communications, and sensing com...
We study quantum simulation of SU(3) non-Abelian gauge theory dynamically coupled with fundamental fermions in $3+1$ dimensions by employing the lattice Hamiltonian in axial gauge that avoids Gauss's ...
Germanium hole spin qubits are a promising and versatile platform for quantum computation and simulation. In this system, strong spin-orbit interaction (SOI) renders the single-qubit $g$-tensor anisot...
The process-matrix formalism describes quantum processes without assuming a fixed global causal order, but the physical meaning of indefinite causal order remains open. We address this question within...
We demonstrate a static, disorder-free spin chain Hamiltonian which, by tuning the coupling to an auxiliary qubit, realizes a crossover between super-ballistic, ancilla-accelerated scrambling and sub-...
Full-stack quantum and AI startup QpiAI has inaugurated an 8-inch quantum processing unit (QPU) manufacturing facility in Jakkur, Bengaluru. Formally designated as Phase 2 of its 70,000-square-foot R&...
While the impossibility of perfectly identifying non-orthogonal states is a cornerstone of quantum information science, their probabilistic discrimination is nonetheless permissible. Here, we propose ...
New classical simulation technique makes it practical to benchmark large-scale logical magic-state preparation protocols under realistic noise conditions The post Shortcut for simulating logical magic...
The predictive simulation of molecules and materials has had a broad and significant impact. It nevertheless remains constrained by the cost of accurately treating electronic correlation, excited stat...
Insider Brief Press release – D-Wave Quantum Inc. (NASDAQ: QBTS) (“D-Wave” or the “Company”), the only dual-platform quantum computing company providing both annealing and gate-model systems, software...
Insider Brief Quantum computing startup QpiAI has opened a manufacturing facility in Bengaluru capable of fabricating superconducting quantum processors, part of an effort to bring more of its quantum...
Insider Brief PRESS RELEASE — Two recent scientific publications from the Fraunhofer Institute for Applied Solid State Physics IAF shed light on how the concept of quantum advantage can be assessed mo...
Chattanooga-based startup accelerator The Company Lab (CO.LAB) has launched CO.LAB Q, a 12-month quantum commercialization studio designed to translate early-stage quantum research into market-ready c...
Insider Brief Press release – The Company Lab (CO.LAB) today announced CO.LAB Q, a 12-month quantum commercialization studio designed to help promising startups and research teams turn advanced techno...
Yuval Boger interviews Dorit Dor, co-founder of QBeat Ventures and former senior executive at Check Point. They discuss lessons quantum startups can draw from the evolution of cybersecurity, including...
Insider Brief Press release – The University of Guelph and Xanadu, a Canadian leader in quantum computing, have signed a memorandum of understanding (MOU) to collaborate on advancing quantum computing...
Quantum processors with native multi-qubit gates may offer very efficient implementations of near-term quantum algorithms on noisy hardware. Here, we introduce the multiunimon, a superconducting multi...
Insider Brief Mention quantum teleportation in conversation and most people picture humans dissolving in one place and appearing somewhere else. Something from Star Trek, maybe with a dramatic sound e...
The connection between Krylov complexity and Berry phase in adiabatic dynamics is investigated under the instantaneous eigenstate basis of a slowly evolving spin system. Adiabatic dynamics force the K...
Quantum circuits are fundamental components of quantum computing, and state-vector-based quantum circuit simulation is a widely used technique for tracking qubit behavior throughout circuit evolution....
Japanese industrial conglomerates Mitsui & Co. and Mitsubishi Electric have published joint experimental benchmarks evaluating the Quantum Fourier Transform (QFT) on Quantinuum’s 98-qubit Helios trapp...
Researchers from Quantinuum, NVIDIA, and Pfizer Inc. have validated a Generative Quantum AI (GenQAI) framework designed to automate and accelerate quantum circuit synthesis for pharmaceutical research...
Hybrid approaches that combine different spin qubit encodings offer promising advantages. In particular, the additional degrees of freedom available in exchange-only qubits and their extensions enable...
The EPFL Center for Quantum Science and Engineering (QSE), in collaboration with EPFL’s SCITAS high-performance computing (HPC) platform, has partnered with Quantinuum to provide cloud-based access to...
Insider Brief Press release – New independent modelling has been released that shows Quantum Australia‘s national programs have created $83.1 million in economic value while supporting more than six t...
Trapped-ion quantum computing developer Quantinuum (NASDAQ: QNT) and Fortune Global 500 electronics manufacturer Quanta Computer have signed a collaborative development agreement to industrialize the ...
Insider Brief Tamil Nadu signed four memoranda of understanding (MoUs) with quantum computing ventures at the Vetri Tamil Nadu Investment Conclave 2026, the Deccan Chronicle reported. The agreements c...
Insider Brief Press release – Florida State University is launching Florida’s first formal graduate-level credential in quantum information science and engineering, opening a new pathway for students ...
Insider Brief Press release – Innosphere, on behalf of the National Science Foundation ASCEND Engine, has entered into a Memorandum of Understanding (MOU) with the Montana Photonics and Quantum Allian...
Insider Brief Press release – Quanta Computer (“Quanta”), a Fortune Global 500 manufacturer of advanced computing and cloud infrastructure, and Quantinuum (Nasdaq: QNT), a leading quantum computing co...
The authors present a rigorous empirical evaluation of three distinct optimization paradigms for institutional factor portfolio construction: an entropy-based photonic quantum annealer (Dirac-3, Quant...
Entanglement certification is often performed on states that have already undergone noisy transmission or processing. Noise can reduce the surviving entanglement and can also cause a given criterion t...
Quantum diffusion models typically parameterize forward corruption by raw channel strength, even though equal parameter increments need not erase equal information or induce comparable inverse problem...
Insider Brief Silicon spin qubit company Diraq has published a blog post arguing that the quantum computing industry’s hiring model which is historically built around doctoral-level candidates – canno...
Quantum illumination exploits entanglement between a transmitted signal and a retained idler to improve the error-probability exponent of target detection by roughly a factor of four (6 dB) over that ...
For testing quantum mechanics in the macroscopic domain, a major challenge is to devise effective means for enhancing the observable nonclassical signatures despite the ubiquitous presence of environm...
Absolutely maximally entangled states require every reduction of at most half of the parties to be maximally mixed, a condition that is both rigid and often impossible for qubit systems. Previous work...
We show that the network of quantum register states of a quantum computer (QC), coupled through residual two-body interactions between qubits, exhibits small-world properties analogous to those of com...
Molecular spins represent a versatile platform for quantum information science, with the potential to offer chemically tunable, addressable qubits. However, achieving this requires understanding and m...
Certifying genuine multipartite entanglement in quantum systems can require a number of measurements that grows exponentially with the system size. Here we introduce a criterion based on correlation-t...
The Defense Advanced Research Projects Agency (DARPA) has awarded a research contract to quantum networking hardware startup Qunnect to enhance the signal stability and resilience of entanglement-base...
Quantum computing has alternated between breakthrough darling and overhyped promise in technology circles. Its powerful new capabilities come with a threat to break current cryptography, but for busin...
In quantum physics the order in which different operations occur can be placed in superposition. The resulting processes have an indefinite causal order and are both of fundamental interest and can be...
To achieve large-scale fault-tolerant quantum computation, it may be easier to combine many small sets of qubits than to construct a single large set. For example via quantum error correction with blo...
The spin of a quasiparticle trapped in a quantum dot Josephson junction forms the basis of an Andreev spin qubit (ASQ): a semiconductor-superconductor device where the interplay between a localized sp...
Characterising the efficiency with which designs over various subsets of the unitary group may be constructed is an important goal of quantum information theory. While it is now known that approximate...
Quantum technology has the potential to transform scientific discovery, but quantum advantages often require processing capabilities well beyond the reach of experimental platforms. We show that coupl...
Specialized engineering firm T-SQUARED has commenced construction on a new Quantum Innovation Centre at Oxford Technology Park for neutral-atom quantum technology company Infleqtion (NYSE: INFQ). The ...
Unitary designs provide finite-moment approximations to Haar-random unitaries, with wide-ranging applications across physics and quantum information, from scrambling and black-hole dynamics to foundat...
We propose a unified physical principle for entanglement harvesting: the entanglement that two localized detectors can extract from a quantum field is determined solely by how localized the field's ef...
Discrete-time quantum walks provide a versatile framework for investigating the generation, redistribution, and transport of quantum correlations in composite quantum systems. Here, we study the dynam...
Analysis of a mathematical puzzle that Leonhard Euler deemed unsolvable in the 1700s reveals that the crucial ingredient for cracking it after all is quantum entanglement
Insider Brief Press release – For decades, the distribution of quantum information has been confined to laboratory demonstrations because of the fragile nature of maintaining the fidelity of quantum e...
The University of Guelph (U of G) and photonic quantum computing developer Xanadu Quantum Technologies (NASDAQ/TSX: XNDU) have signed a Memorandum of Understanding (MOU) to collaborate on quantum comp...
Photonic quantum computing developer Xanadu Quantum Technologies Limited (NASDAQ/TSX: XNDU) has announced a strategic research partnership with the University of Alberta to engineer novel quantum algo...
Quantum technology provider BTQ Technologies Corp. (NASDAQ: BTQ) has signed a Memorandum of Understanding (MOU) with ITCENGLOBAL CO., Ltd. (KOSDAQ: 124500) through its listed security platform subsidi...
Aggregating logical quantum information encoded in continuous-variable phase space is essential for distributed quantum computing. However, passive linear optics fail for non-Gaussian Gottesman-Kitaev...
The trapped-ion optical-metastable-ground ($\textit{omg}$) architecture for quantum processors promises the full functionality of two-species experiments, including sympathetic cooling and non-destruc...
Determining whether a target unitary can be implemented within a prescribed quantum circuit architecture is a fundamental problem in quantum information, with direct implications for optimisation and ...
We classically simulate the IBM doped Clifford random circuit sampling experiment, comprising $70$ qubits, $70$ entangling layers, and $468$ inserted $T$ gates. A deterministic temporal-boundary tenso...
Ensuring ancilla safety is a critical correctness requirement for quantum compilation, since ancilla qubits are routinely introduced to implement complex operations with fewer gates and reduced depth....
We introduce an operational measure of nonclassicality for qubit systems based on the violation of Kolmogorov consistency conditions in sequential measurements. In contrast to previous work by Milz et...
From fluid flow and transport to collective dynamics, numerical simulation of nonlinear partial differential equations underpins modern scientific computing. Extending this capability to quantum compu...
We investigate how network geometry and excitation sector separately control pairwise entanglement decay in asymmetric multipartite $W$ states. To disentangle these effects, we introduce an analytical...
As quantum computing progresses from proof-of-principle demonstrations toward practical utility, a significant impediment is the need to augment algorithmic feasibility with system-level optimization ...
Scientific simulations demand methods combining scalability with predictive accuracy. Density Functional Theory (DFT) on High-Performance Computing (HPC) enables large-scale electronic-structure simul...
When quantum information initially stored in a local qubit disappears, it need not be lost: it may have moved into nearby degrees of freedom or become inaccessible to shallow local control. We introdu...
Magnetic levitation offer passive levitation of massive objects for use in advanced inertia sensors, for the generation of non-classical macroscopic motional states, and towards the table-top testing ...
Fixed quantum feature maps are increasingly inserted into diffusion denoisers, but standard image benchmarks do not reveal which structural constraint limits them. We introduce CoupledPhaseTexture, a ...
Quantum advantage refers to the point at which a quantum computer solves a clearly defined task faster or more efficiently than any classical computer—or makes it solvable in the first place. For many...
Indefinite causal order reverses the direction of heat flow without violating thermodynamics The post Quantum principle allows heat to flow from cold to hot appeared first on Physics World .
Insider Brief PRESS RELEASE — The inevitable leakage of energy and information from a quantum system into its surrounding environment is the enemy of quantum technology. Now, researchers have demonstr...
Insider Brief U.S. lawmakers are moving to sharply increase military spending on quantum technology as Washington seeks to keep pace with China and turn years of scientific research into defense, inte...
D-Wave Quantum Inc. reported its financial results for the second quarter and first half of 2026, highlighting significant commercial momentum and rapid growth in long-term commitments. While quarterl...
Quemix Inc., a Tokyo-based quantum software and algorithm startup and consolidated subsidiary of TerraSky Co., Ltd., announced it has secured an investment from Honda Motor Co., Ltd. The funding, prov...
Shanghai-based photonic quantum firm TuringQ has officially initiated pre-IPO tutoring with the Shanghai branch of the China Securities Regulatory Commission, positioning itself as a leading contender...
Installation of an integrated-photonics surface ion trap into an experimental vacuum system. The National Science Foundation (NSF) has selected a multidisciplinary team led by the University of Califo...
Yuval Boger interviews Matt Kinsella, CEO of Infleqtion. They discuss Infleqtion’s neutral-atom strategy, including its combination of quantum computing, sensing, and timing products, and why Matt bel...
Rigetti Computing, Inc. (Nasdaq: RGTI) has reported its financial results for the second quarter ended June 30, 2026. The Berkeley-based superconducting quantum developer highlighted sequential and ye...
Quantum software provider QC Ware has completed a technology demonstration validating a hybrid quantum-classical computational chemistry workflow using its Promethium® platform and IBM Quantum hardwar...
Scientists have generated quantum entanglement directly from sunlight, potentially offering a lower-energy alternative to the lasers normally used in quantum technology. Their outdoor experiment produ...
Using light to process quantum information is one of the most promising approaches to building future quantum computers. Light particles, known as photons, are excellent carriers of quantum informatio...
Generating entanglement rapidly and reliably is essential for quantum information processing, communication, and metrology. Dissipative preparation is attractive because engineered reservoirs robustly...
IonQ, Inc. (NYSE: IONQ) has reported its financial results for the second quarter ended June 30, 2026. The College Park-based trapped-ion leader delivered its fifth consecutive quarter of record resul...
High rate quantum low-density parity-check codes on reconfigurable neutral-atom arrays can reduce the overhead of quantum error correction, but near-term devices support only hundreds of qubits with l...
This paper investigates a quantum extension of classical Multiple-Input Multiple-Output (MIMO) communication in which the conventional linear channel model is replaced by a parameterized multi-qubit u...
Insider Brief Shanghai-based TuringQ has entered the IPO preparation process, becoming the latest Chinese quantum computing company to pursue a public listing as the country’s quantum sector shifts it...
Flip-chip integration offers a promising route toward scalable superconducting quantum processors and hybrid semiconductor-superconductor quantum devices. We develop a three-dimensional transmon archi...
Continuous-variable quantum key distribution (CV-QKD) promises high rates and seamless integration with classical beams within a single optical fiber. Over the years, implementations have been perform...
Insider Brief Every major organization has published a timeline. Governments, technology companies, financial institutions, critical infrastructure operators, and blockchain communities – all of the m...
Quantum coherence, quantum decoherence, and photon number reduction are coexistent in linear lossy optical systems. However, how these three elements combine together to determine the evolution of the...
Insider Brief Press release – QC Ware (“QC Ware” or the “Company”) today announced a technology demonstration of a hybrid quantum-classical computational chemistry workflow using Promethium® and IBM Q...
Insider Brief Press release – Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced financial results for the second...
Insider Brief PRESS RELEASE — Scientists have demonstrated that sunlight, as a natural light source, can generate quantum-entangled photon pairs. With their findings, the international research team c...
We propose and demonstrate the Kramers-Henneberger KH) atom as a novel qubit platform for ultrafast single-qubit gate operations. In the KH frame, the time-averaged strong laser field engineers a doub...
How quantum matter relaxes far from equilibrium is a central open problem in many-body physics, and one for which analog quantum simulators are well positioned to move from confirming theory to discov...
The failure of quantum thermalization due to Many-Body Localization (MBL) has evolved from a theoretical concept in spin chains to an experimental reality in synthetic quantum platforms, most notably ...
French neutral-atom quantum computing developer Pasqal Holding SAS has announced that its joint Form F-4 Registration Statement with Special Purpose Acquisition Company (SPAC) Bleichroeder Acquisition...
The quantification of multipartite entanglement remains a long-standing open challenge in quantum information theory with major implications for quantum foundations and quantum technologies. In the co...
Insider Brief Press release – Uviquity, a deep-tech company building integrated photonics on an aluminum nitride (AlN) platform for quantum and ultraviolet applications, today announced that Dr. Vince...
Neutral atoms trapped in optical tweezers and excited to Rydberg states, together with trapped ions, are among the most advanced platforms for quantum simulation and quantum computing. Current experim...
The amplification of quantum information carried by a single quantum excitation is a recurring challenge across diverse quantum platforms. The coupling between a single qubit and a mesoscopic ensemble...
Insider Brief PRESS RELEASE — Eighty higher education students from across the country participated in various activities and engaged with quantum science experts in a week-long summer school experien...
Insider Brief Press release – ZeroTier, one of the world’s top software-defined networking companies, and Carahsoft Technology Corp., The Trusted Government IT Solutions Provider®, today announced a s...
Distributed quantum computing provides a scalable route for executing quantum circuits beyond the capacity limits of a single quantum processing unit (QPU), but it introduces a communication-aware com...
Electron spin qubits in microwave cavities provide a promising platform for scalable quantum computing hardware, leveraging long coherence times, charge-noise robustness and cavity mediated qubit-qubi...
We test whether a parameterized quantum circuit (PQC) improves a hybrid quantum-classical model's performance on classical datasets, using an interface-matched classical map as the control while holdi...
Unsharp measurements are key resources for tasks that balance information gain and disturbance, but certifying them without device assumptions remains a challenge. We propose a fully device-independen...
This paper aims to contextualize the requirements for Quantum Computing (QC) algorithms to achieve a quantum advantage in solving the alternating current power flow (ACPF) problem, with a focus on run...
Shor's algorithm is a canonical quantum supremacy target whose core operation relies on the Quantum Fourier Transform (QFT). We resolve an open question of Fang, Fenner, Green, Homer and Zhang from 20...
Xanadu Quantum Technologies Ltd. (NASDAQ/TSX: XNDU) has announced its financial results for the second quarter ended June 30, 2026. The Toronto-based photonic quantum leader highlighted significant ha...
Insider Brief A preliminary paper from an Amazon Web Services cryptographer describes a polynomial-time quantum algorithm for a long-standing mathematical problem whose solution could have implication...
We apply time-reversal symmetry to quantum codes and show that it imposes parity selection rules on the physical error algebra. A time-reversal-invariant logical qubit on an odd number of spins is a K...
Topologically ordered phases naturally realize quantum error correction through nonlocal encoding of quantum information. More recently, conformal field theories have been shown to realize approximate...
Quantum errors are a normal part of quantum computing because fragile physical qubits (the tiny components storing data) can easily break down because of environmental noise, like heat, stray signals ...
Quantum optimization has attracted growing interest as quantum hardware continues to improve, yet state-of-the-art classical solvers remain a formidable benchmark for practical utility. Rather than se...
Solving the Vehicle Routing Problem (VRP) in Stochastic Transportation Networks (STNs), a core task in Intelligent Transportation Systems (ITS), introduces estimation challenges for stochastic path tr...
Mapping quantum programs to restricted physical chips requires SWAP operations, incurring depth and error penalties. In symmetric programs, this routing overhead breaks theoretical symmetry because id...
Today's quantum technologies rely on energy-intensive lasers, raising concerns that scaling them up could further increase energy demands. In new work, researchers have demonstrated that quantum entan...
Insider Brief Press release – Florida Atlantic University’s Executive Education program in the College of Business is launching a new certificate course in quantum computing designed to help business ...
Yonatan Cohen of Quantum Machines is our podcast guest The post Building bridges between quantum and classical computing appeared first on Physics World .
Insider Brief Press release – Pasqal Holding SAS (“Pasqal”), a global leader in neutral-atom quantum computing, today announced that its joint registration statement on Form F-4 (the “Registration Sta...
Insider Brief D-Wave Quantum reported flat second-quarter revenue but continued strong growth in bookings, underscoring growing customer demand as the company accelerated investment in both its anneal...
Researchers from the National Institute of Standards and Technology (NIST), the Joint Quantum Institute (JQI) at the University of Maryland, and quantum networking firm Qunnect have successfully demon...
High-dimensional nuclear spins offer a hardware-efficient route to quantum error correction (QEC), with the spin cat code providing intrinsic robustness against phase errors -- the dominant noise chan...
Quantum computing, networking, and sensing platform provider IonQ (NYSE: IONQ) has announced two strategic defense sector awards expanding its national security portfolio across quantum position, navi...
Insider Brief Press release – Daon®, The Digital Identity Trust Company, today introduced its Quantum Identity architecture, a patent-backed approach designed to help future identity systems determine...
We study idealized levitated protocols that create spatial superpositions of massive test particles. For each protocol, we compare the dimensionless contrast-loss exponent of mass-proportional continu...
Insider Brief Press release – Quantum Optics Jena GmbH today announced that its ELVIS system has become the world’s first quantum communication system to resist real-world quantum hacking tricks, pass...
Thailand’s Ministry of Higher Education, Science, Research and Innovation (MHESI), industrial conglomerate Charoen Pokphand (CP) Group, telecommunications provider True Corporation, Arise Ventures Gro...
Quantum cybersecurity platform provider enQase and quantum communications firm Light Rider Inc. have announced a strategic technology partnership to combine their software, hardware, and key distribut...
a, Schematic of a two dual-rail cavity qubit system. b, Diagram of the SWS gate sequence between two dual-rail cavity qubits. c, Schematic of photon population during the gate sequence for the four ba...
Reaching fault tolerance means scaling qubit counts by orders of magnitude, a jump that conventional superconducting architectures cannot sustain without solving the so-called `wiring problem'. Global...
Insider Brief DARPA is shifting more of its attention from demonstrating quantum technologies in the laboratory to figuring out how to manufacture them at scale, according to a news release from the a...
Quantum state tomography is fundamental to quantum information processing but becomes infeasible at scale due to the exponential growth of the state space. Shadow tomography alleviates this challenge ...
Insider Brief Xanadu Quantum Technologies reported higher year-over-year second-quarter revenue while stepping up investment in research, manufacturing and U.S. expansion, as the photonic quantum comp...
Guest Post by Michael Osei, M.Sc. in Physics. Press release – Quantum technology can sound like science fiction: computers that solve problems beyond the reach of today’s machines, sensors that detect...
Distributing entanglement between distant qubits is a crucial element of scalable quantum computing. Here, we describe a scalable quantum interconnect that generates remote entanglement at rates appro...
Non-Abelian anyons arise as exotic excitations in fractional quantum Hall (FQH) matter and have proved very elusive to realize in conventional platforms. In this work, we show that on a programmable q...
Perfect prepare-and-measure games exhibit an all-or-nothing quantum advantage: a quantum system of dimension $d$ satisfies every prescribed winning constraint, whereas a classical $d$-level message ca...
This post was contributed by Martin Schuetz and Ruben Andrist from the Amazon Advanced Solutions Lab, and Romina Yalovetzky and Atithi Acharya from Global Technology Applied Research at JPMorganChase....
Company noted for building quantum annealers now also making gate-based hardware.
Neutral atom quantum computing utilizes laser-trapped neutral atoms as qubits and realizes quantum logic gate operations through Rydberg-state interactions. In recent years, it has become one of the m...
Extracting total correlations from a quantum system usually requires reconstructing its state, whereas many experiments access only a few measurement settings. A possible shortcut is to add the mutual...
The recently proposed spontaneous disentanglement hypothesis is formulated using a modified Schrödinger equation having an added nonlinear term. The hypothesis is motivated by some outstanding issues ...
All realistic quantum systems are inevitably in contact with the environment. Suppressing theimpact of environmental noise is a critical challenge in cutting-edge quantum technologies. In thiswork, we...
Israeli quantum startup Qarakal Quantum Ltd. has officially launched Pangaea, a modular, three-dimensional superconducting quantum computing architecture engineered to reduce the physical qubit requir...
Dynamic quantum circuits (DQCs) provide a hardware-efficient route to quantum computing by reducing physical-qubit overhead and compressing circuit topology through mid-circuit measurements, qubit res...
Quantum platform developer IonQ (NYSE: IONQ) has signed a Memorandum of Understanding (MOU) with Sandia National Laboratories to pursue the co-design of quantum information science (QIS) technologies ...
Indefinite causal order extends quantum information processing beyond fixed causal structures, with the quantum SWITCH serving as its canonical realization. By coherently superposing different orders ...
Hamming weight computation maps an $n$-bit input to the number of ones it contains. It is a basic subroutine in quantum computing, and the core building block for symmetric Boolean functions, whose va...
Kristian Dominek Barajas is head of quantum theory at Oxford Ionics, an IonQ company The post Ask me anything: Kristian Dominek Barajas – ‘I’m able to take a really complicated problem and give it my ...
Insider Brief Leading quantum technology companies, researchers and policymakers will gather next week at The University of Texas at Dallas to discuss the future of quantum computing, networking and w...
Schrödinger cat states, representing coherent superpositions of macroscopically distinguishable states, are indispensable nonclassical resources for continuous-variable quantum information processing....
Insider Brief Israel has launched a national tender to establish a domestically produced quantum computing platform, marking the first major implementation step in a broader government strategy aimed ...
Insider Brief Press release – IonQ (NYSE: IONQ), a leading quantum platform company, today announced it has signed a memorandum of understanding with Sandia National Laboratories, to explore accelerat...
High-coherence superconducting cavities offer a promising platform for quantum information, with long coherence times and negligible intrinsic dephasing. However, cavity control generally relies on no...
Partial dynamical symmetry (PDS) is an algebraic structure in which a prescribed symmetry is neither exact nor completely broken: a subset of eigenstates keeps good quantum numbers and remains solvabl...
Measurement-based quantum simulation (MBQS)---a recently proposed architecture for simulating lattice gauge theories---implements Hamiltonian dynamics by consuming a model-specific entangled resource ...
IonQ signs an MOU with Sandia National Laboratories to accelerate quantum computing, networking, and ion-trap co-design for U.S. national security.
Tensor-network contraction simulates quantum circuits, but modern matrix accelerators (NPUs, TPUs) expose only real GEMM pipelines, so the complex networks of quantum simulation must be reconstructed ...
It is well established that quantum strategies outperform classical ones in several communication tasks. We study the quantum communication complexity of correlations arising from joint measurements o...
Quantum error correction (QEC) is indispensable for building scalable fault-tolerant quantum computers. Effective QEC demands stringent real-time decoding: the decoder must process syndrome measuremen...
Quantum error correction (QEC) and Quantum Darwinism describe opposing consequences of system-environment interactions: QEC seeks to preserve logical quantum information, whereas Quantum Darwinism exp...
Insider Brief Press release – enQase, a U.S.-based full-stack quantum-safe security platform, and Light Rider Inc., a quantum technology company developing secure communications, quantum entropy, and ...
The influence of environmental decoherence on quantum teleportation is investigated by considering the three-qubit Maximally Sliced (MS) state as the shared entangled resource. Using the Kraus operato...
Symmetry-protected topological (SPT) phases provide a platform for encoding quantum information in protected boundary degrees of freedom. Here we study the three-leg Affleck-Kennedy-Lieb-Tasaki (AKLT)...
Vacuum Rabi oscillations between a single photon and a single spin demonstrate the capability of harnessing light-matter interaction at the level of a single quantum of energy. Since the observation o...
Insider Brief Press release – Quantum Corridor, Ciena (NYSE: CIEN) and Toshiba have completed a successful trial of high-speed quantum-safe networking on Quantum Corridor’s live commercial network in ...
Entanglement distillation is a fundamental task in quantum information processing. In this work, we investigate the distillability properties of a class of two-qutrit symmetric NPT states of rank five...
Insider Brief Press release – Horizon Quantum Holdings Ltd. (Nasdaq: HQ) (“Horizon Quantum,” “Horizon,” or “the Company”), a pioneer of software infrastructure for quantum applications, today reported...
Insider Brief IQM Quantum Computers said its public listing has strengthened its financial position and allowed it to reaffirm its 2026 outlook, according to a statement from the company. The Finnish ...
Insider Brief Press release – According to the 2026 Thales Data Threat Report, the threat of Harvest Now, Decrypt Later (HNDL) attacks was the top-cited risk, with 59% of organizations reporting that ...
Insider Brief Jim Cramer said he plans to sell his bitcoin — perhaps not coincidentally — after IBM Chairman and CEO Arvind Krishna warned that investors should be “paranoid” about quantum computing’s...
This study investigates the generation and enhancement of quantum entanglement in an electro-optomechanical ring cavity system. The setup integrates two Coulomb-coupled mechanical resonators, which se...
The gravitational frequency shift of light is well understood in the theory of classical electromagnetism. Nevertheless, its description in quantum theory is not yet fully developed. Recent work point...
Insider Brief Press release – QuiX Quantum today announced the commercial availability of Alquor 2.0, the next generation of its rack-mountable quantum photonic processor platform, available in 8-mode...
Classical simulation of quantum circuits is an essential tool in quantum information science, but its applicability is constrained by the exponential growth of the Hilbert space and the entanglement s...
Integration of quantum optical technique on-chip is crucial for large scale applications of quantum technology, which were proven in a free space environment to be superior to the corresponding classi...
Quantum computing developer D-Wave Quantum Inc. (NASDAQ: QBTS) has signed an agreement with Nasdaq Verafin—the financial crime management technology unit of Nasdaq—to evaluate the use of quantum-hybri...
Tokyo-based optical quantum startup OptQC Corp. and telecommunications giant NTT, Inc. have signed a capital and business alliance agreement to accelerate the development and commercialization of a fa...
Students participating in hands-on STEM activities. Source: PsiQuantum Photonic quantum computing developer PsiQuantum has announced a $250,000 philanthropic investment to expand local STEM education,...
Tokyo-based quantum software developer JIJ Inc. has announced the completion of an 840 million JPY (approximately $5.2 million USD) equity financing round led by Global Brain. The capital raise includ...
Quantum hardware and networking company IonQ (NYSE: IONQ) and Chattanooga electric power and telecommunications provider EPB have announced plans to launch the Tennessee Quantum Communications Researc...
Global digital services provider Fujitsu, Monash University, and Australia’s national science agency CSIRO have signed a Memorandum of Understanding (MoU) to accelerate the development of practical qu...
Protected superconducting qubits such as the $0$-$π$ qubit promise to substantially suppress error rates, facilitating fault-tolerant quantum computing with fewer qubits. Measuring these qubits is cha...
Insider Brief Press release – IonQ, Inc. (NYSE: IONQ), the world’s leading quantum platform company, and EPB, Chattanooga’s energy and communications solutions company, today announced plans for the T...
Insider Brief Quantum scientists exploring the deepest mysteries of quantum mechanics may be able to enlist the assistance of an artificial intelligence helper, according to a frontier AI lab. An inte...
We introduce a novel multipartite entanglement-assisted classical communication task, referred to as dense coding swapping, in which legitimate parties collaboratively swap the dense codeability from ...
Monitored random Clifford circuit is a paradigmatic platform for exploring non-equilibrium quantum many-body dynamics using quantum-information methods. It is well-known for exhibiting a measurement-i...
Quantum algorithms based on linear-system approaches for solving differential equations demand qubit and precision resources beyond near-term capabilities. To address these challenges, this work propo...
Photonic multi-qubit entanglement is key to optical quantum information processing, particularly universal quantum computing. Yet multi-photon sources suffer from low emission efficiency, making singl...
We investigate a quantum Otto engine (QOE) constructed from the two-qubit quantum Rabi model, operating within a cavity quantum electrodynamics (QED) architecture. The engine operates with two qubits ...
The standard benchmark for high-dimensional entanglement is the number of dimensions in which entanglement must be present in order to generate the state. This is called the Schmidt number and its det...
Entanglement generation is a fundamental dynamical capability in quantum information science and underpins many quantum advantages. While quantum theory enables it through unitary dynamics, boxworld, ...
Insider Brief Press release – Today, PsiQuantum announced a $250,000 philanthropic investment in local schools, higher education institutions, and STEM programs to advance the next generation of scien...
Quantum computing developer Rigetti Computing (Nasdaq: RGTI) has partnered with Hewlett Packard Enterprise (HPE) and the Pittsburgh Supercomputing Center (PSC)—a joint center of Carnegie Mellon Univer...
Readable error records can protect quantum sensing because they prevent physically distinct noise trajectories from being irreversibly mixed. A finite detector or ancilla, however, can retain only fin...
Quantum resource theory has sharpened our understanding of the intrinsic complexity of quantum systems, particularly their classical simulability. However, it remains unclear which quantum resource go...
The University of California, Berkeley—on behalf of its Department of Physics and the Roger Herst Quantum Nexus—has signed a five-year Memorandum of Understanding (MOU) with quantum automation develop...
Many-body localization (MBL) is a dynamical phenomenon that describes the non-ergodicity of isolated quantum many-body systems. In contrast to thermalization, this phenomenon leads to a long-lived mem...
Insider Brief Press release – SEALSQ Corp (NASDAQ: LAES) (“SEALSQ” or the “Company”), a global leader in post-quantum semiconductor and cybersecurity technology, today highlighted the growing importan...
Insider Brief China has established a national technical committee dedicated to quantum information standards, underscoring the country’s effort to build the regulatory and technical framework needed ...
Most recently proposed quantum algorithms for solving linear and nonlinear partial differential equations rely on non-unitary operations. These operations are typically implemented probabilistically, ...
Insider Brief Press release – OptQC Corp. (Headquarters: Toshima-ku, Tokyo; Representative Director and CEO: Kan Takase; hereinafter “OptQC“) and NTT, Inc. (Headquarters: Chiyoda-ku, Tokyo; President ...
In spite of recent advances, quantum computers are expected to be sufficiently noisy in the coming few years to the extent of limiting quantum chemical calculations to relatively small number of orbit...
Insider Brief Press release – D-Wave Quantum Inc. (NASDAQ: QBTS), (“D-Wave” or the “Company”), the only dual-platform quantum computing company providing both annealing and gate-model systems, softwar...
Fault-tolerant quantum computing requires classical decoders that keep pace with the underlying hardware, translating syndrome measurements into corrections fast enough to avoid an exponential backlog...
Quantum error correction (QEC) is the most promising route toward fault-tolerant quantum computing and, thus, useful quantum computers. QEC operates as a continuous measure-decode-correct cycle: ancil...
We prove that the entanglement of formation of every two-mode Gaussian state coincides with its Gaussian restriction, solving a longstanding open problem in continuous variable quantum information the...
We introduce Pangaea, a fault-tolerant quantum architecture that uses a quantum bus to mediate logical operations between remote patches of two-dimensional topological codes. The bus is an auxiliary g...
Magnonic systems are a promising resource for quantum technologies because of their ability to couple significantly disparate quantum platforms and the generation of nonclassical magnon states through...
This paper proposes a multi ring M-APSK constellation optimization method for discrete-modulated continuous variable quantum key distribution. Unlike conventional APSK structures with fixed ring spaci...
Quantum metrology, which addresses parameter estimation in quantum systems, has broad applications across science and technology. Conventional metrology protocols for multi-qubit states in the multi-p...
Superconducting quantum computer developer IQM Quantum Computers (Nasdaq: IQMX) and European rail operator Deutsche Bahn have published joint research demonstrating the execution of a hybrid quantum-c...
Global professional services firm Ernst & Young (EY) has announced the addition of an on-site quantum computer to its in-house technology stack. Led by EY Canada, the deployment serves as a key innova...
IBM and researchers from the University of Chicago announced a demonstration in quantum computing that meets the fundamental criteria for "quantum advantage"—the point where quantum computers can be c...
Researchers from the Cleveland Clinic and IBM Research have developed a quantum machine learning framework to predict which tumor gene mutations generate immunogenic neoantigens—abnormal cell-surface ...
Yuval Boger interviews mathematician Gil Kalai about his long-standing skepticism regarding scalable quantum computing. Kalai explains two main arguments behind his theory: correlated noise that may d...