541 curated articles
Insider Brief PRESS RELEASE — IQM Quantum Computers (Nasdaq: IQMX), a global leader in superconducting quantum computers, today announced a purchase agreement with the Eldorado Research Institute to deploy its first quantum computer in South America, marking IQM‘s entry into the region. The IQM Spar...
The NSF and UKRI have jointly committed $10 million to fund eight transatlantic research teams in molecular quantum information science. This initiati...
How two research teams and a London based quantum hardware company are betting nanoscale gold can crack the stability-scalability problem that has sta...
Spain's CSIC has opened a Quantum Nanofabrication Area at IMB-CNM in Barcelona, a €6 million investment funded by Spain's PERTE Chip program and NextG...
Oxford Quantum Circuits (OQC) and Trust Base benchmarked hybrid quantum workloads for financial risk modeling, evaluating classical, hybrid quantum-cl...
Quobly has successfully demonstrated single-chip execution of qubit readout, single-qubit gates, and two-qubit gates on its QSOI® architecture, fabric...
Anderon LLC, an IBM subsidiary, secured $1 billion in CHIPS Act funding, supplemented by another $1 billion from IBM, to expand its 300mm pure-play qu...
Distributed quantum sensing is an emerging application of quantum networking, where entangled probe states are employed to sense combinations of deloc...
We show that boson sampling with an arbitrary $m$-mode interferometer and $n\le m$ single-photon inputs can be simulated to inverse-polynomial total-v...
Quantum networks are resources for scaling quantum computers and distributed sensing technologies while offering post-quantum security benefits. Telep...
This work studies the placement of an entanglement source along a communication line formed by two noisy qubit channels. Recent work argued, on analyt...
We give a quantum algorithm for Lindbladian simulation given a block encoding of the Hamiltonian $H$ and a projected unitary encoding of the stacked j...
Insider Brief PRESS RELEASE — Quobly, a French quantum computing company developing industrially scalable quantum computers based on silicon spin qubi...
Certifying nonclassicality without assuming any particular underlying physical theory constitutes both a foundational challenge and a requirement for ...
Quantum key distribution (QKD) enables secure underwater communications essential for maritime infrastructure. Underwater optical channels introduce s...
Quantum neural networks (QNNs) are typically built from variational quantum circuits (VQCs), which are limited by local measurements. Adaptive non-loc...
We propose a compact NISQ-compatible quantum transformer architecture for synthetic QNLP sequence modelling. The model preserves the autoregressive ne...
Gate-defined hole spins combine strong spin-orbit coupling with exceptional strain sensitivity, making surface acoustic waves a natural route to remot...
We establish unbounded two-use Holevo additivity gaps in finite dimensions. For each sufficiently large fixed integer $K$ and all sufficiently large $...
Insider Brief PRESS RELEASE — Emergence Quantum today announced a partnership with hyperscale data centre specialist AirTrunk to bring cryogenic cooli...
Fujitsu has open-sourced OpenQARP, a quantum application development framework, under the Apache License 2.0. Available on GitHub, it offers over 100 ...
TOYO Corporation has expanded its quantum hardware by acquiring an IQM Spark (5-qubit) in addition to its previous order of a 20-qubit IQM Radiance pr...
Recent advances in quantum computing have been driven primarily by improvements in hardware. Here we show that substantial gains can instead arise fro...
Scalable quantum computation is expected to rely on fault-tolerant quantum computation (FTQC), in which quantum error correction (QEC) suppresses phys...
By consuming multiple copies of an unknown qubit state, one can modify its purity while preserving the direction of its Bloch vector. We determine the...
Insider Brief PRESS RELEASE — Today we’re announcing work done by Iceberg Quantum and Diraq, leveraging early access to the newly announced Logical la...
A system between a preparation and a post-selection has had no agreed state since 1964. With positivity as the criterion, a post-selection admits an i...
Entanglement in indistinguishable particle systems can be characterized by the impossibility of unambiguously attributing a complete set of physical p...
In order to solve practical problems on a quantum computer, it is necessary to use fault-tolerant quantum error correction schemes to overcome noise: ...
In order to circumvent that no universal set of gates can be achieved on a given quantum error-correcting codes, additional gates can be performed thr...
We introduce a robust quantum communication protocol that integrates classical error-control coding, entanglement distribution, and superdense coding....
Insider Brief PRESS RELEASE — IQM Quantum Computers, a global leader in superconducting quantum computers, today announced that TOYO Corporation has p...
QC Design has integrated its Plaquette platform with NVIDIA CUDA-Q Logical, announced on September 14, 2026. This integration allows for hardware-real...
At IEEE Quantum Week 2026, IQM Quantum Computers announced the adoption of NVIDIA CUDA-Q Logical within their Halocene quantum error correction produc...
BlueQubit has launched the "Quantum Flywheel" grant program, offering $150,000 in compute credits over three months for quantum algorithm discovery, a...
Quandela and NVIDIA have collaborated on a technical white paper outlining an architecture to integrate photonic Quantum Processing Units (QPUs) with ...
Anyon Computing has introduced an open-source, real-time quantum control system featuring NVIDIA NVQLink integration. This system unifies microwave co...
Insider Brief PRESS RELEASE — Building on our June announcement of a low-latency integration between a Quandela photonic QPU and NVIDIA AI infrastruct...
The vast majority of modern quantum technologies—from quantum cryptography to the quantum internet to the quantum computer—rely on one essential eleme...
Insider Brief PRESS RELEASE — BlueQubit announced the open call for its Quantum Flywheel grant program, a $150,000 initiative created with support fro...
Insider Brief Dutch startup Fortaegis has raised $50 million to move its chip-based security technology into commercial production, targeting networks...
Insider Brief PRESS RELEASE — Quantum Machines, a leading provider of advanced quantum control solutions, today became the first control company to ru...
Researchers at Harvard have demonstrated a way to protect quantum information using microscopic sound waves. By continuously surrounding a diamond-bas...
Klea Dhmitri of Hamamatsu joins Yuval to discuss the company’s role as a photonic component provider for trapped-ion and neutral-atom quantum computer...
Qubic has secured a CA$1.5 million (US$1.08 million) contract with the Canadian federal government through the Innovative Solutions Canada (ISC) Testi...
IQM Quantum Computers will deploy Europe's first logical-qubit-capable superconducting quantum computer, LUMI-IQ, at CSC's Kajaani, Finland data cente...
The Clifford hierarchy is a nested sequence of sets of quantum gates that can be fault-tolerantly performed using gate teleportation within standard q...
We prove an exponential strong converse for quantum communication through every finite-dimensional memoryless channel: at any fixed rate above the qua...
Neutral-atom tweezer arrays support scalable quantum information processing. Dual-species $^{87}\mathrm{Rb}$--$^{171}\mathrm{Yb}$ arrays combine long-...
A quantum classifier assigns labels by evolving an input quantum state and measuring the output, so repeated executions reveal only a distribution ove...
Spin qubits in gate-defined quantum dots provide a highly programmable platform for simulating condensed-matter phenomena. In this work, we introduce ...
Product-formula Hamiltonian simulation is naturally suited to near-term quantum processors, but its accuracy is set by two competing errors: finite-st...
Insider Brief PRESS RELEASE — Xanadu Quantum Technologies Limited (“Xanadu“; NASDAQ/TSX: XNDU), a leading photonic quantum computing company, in colla...
Quantum networks are transitioning from labo- ratory experiments to real-world deployments, with entangle- ment as their fundamental resource. Since a...
We propose a novel theoretical architecture for implementing a quantum random access memory (qRAM) based on quantum random walks in a Rydberg blockade...
Reinforcement learning (RL) can automate quantum architecture search, but its scalability is limited when useful circuit trajectories become rare in t...
Composition modulation is a powerful technique for designing materials with tailored properties, fueling the development of advanced semiconductor dev...
Insider Brief PRESS RELEASE — Q.ANT, a leading provider of photonic processors for energy-efficient high-performance computing and artificial intellig...
Two sharp yes/no questions are mutually unbiased if and only if their involutions anticommute. A set of unbiased questions is therefore a Clifford alg...
Insider Brief PRESS RELEASE — Fujitsu Limited (Fujitsu) and Yaqumo Inc. (Yaqumo) today announced that they have begun verifying quantum computing arch...
Non-Gaussian gates remain a key bottleneck for universal continuous-variable (CV) quantum computation because the nonlinearities they require are diff...
Dynamic circuits, which augment unitary operations with mid-circuit measurements and classical feedforward, can generate long-range entanglement in co...
The compilation of an algorithm can vary significantly with the choice of physical hardware platform and error correction model. Yet, current compilat...
We present a quantum-inspired Walsh/PCE solver for MaxCut based on sparse Pauli-correlation encodings. Instead of assigning one qubit or one variable ...
We introduce a framework for distributed quantum inference under communication constraints. In our model, $m$ distributed nodes each receive one copy ...
The Control Variational Quantum Eigensolver (ctrl-VQE) directly optimizes microwave pulses to enable faster and lower-error quantum-state preparation,...
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New IonQ paper models breaking 256-bit encryption in under 26 days with 20,000 qubits, signaling urgent need for post-quantum cryptography migration.
The performance of superconducting-qubit magnetometers depends not only on magnetic-field encoding during Ramsey interrogation, but also on how effici...
Predicting how molecular weight distribution and monomer sequence evolve during polymerization is central to polymer science, yet classical approaches...
Quantum measurements of large qubit ensembles are often performed indirectly by coupling the ensemble to a detector and subsequently measuring the det...
Insider Brief PRESS RELEASE — Fujitsu today announced that it has developed the world’s first working prototype of a diamond-spin quantum computer inc...
NEC Corporation has ceased its research and development into superconducting quantum computers, shifting focus to quantum-inspired annealing and class...
Two superconducting qubits, a metre of cable apart, have been driven into an entangled state not in spite of their environment, but by it The post Noi...
Insider Brief PRESS RELEASE — Quantum computers are being built in several ways: superconducting circuits, trapped ions, neutral atoms, semiconductor ...
Time-series foundation models produce rich embeddings, but whether quantum models can exploit them, and how far hybrid classical-quantum architectures...
Change detection in synthetic aperture radar (SAR) and interferometric synthetic aperture radar (InSAR) underpins disaster response, infrastructure mo...
Quantum-state texture (QST) has found applications in several fields from quantum foundations and computation to quantum criticality. However, a gener...
The struggle of the hour in quantum computing research is achieving effective suppression of the error mechanisms induced by the interaction of extern...
Tunable couplers have enabled two-qubit gate fidelities in superconducting quantum processors to approach $99.9\%$, yet simultaneously suppressing res...
We study the operator entanglement of local operators in one-dimensional brickwork circuits whose two-site gate satisfies the braid relation; througho...
As quantum hardware scales to larger devices, the classical software layers that interface with it must evolve in step. Postprocessing routines develo...
We introduce Lindblad Multiproduct Formulas: a quantum error mitigation technique that uses two-dimensional tensor networks contracted with loop-corre...
Research center Forschungszentrum Jülich and University of Siegen spin-off eleQtron GmbH have officially brought the JION (Jülich trapped-ION) quantum...
Technology firm Quantum Foundry Copenhagen and the Novo Nordisk Foundation have announced plans to construct a 5,300 m² commercial quantum chip fabric...
Efficiently characterizing quantum error correcting codes is a key challenge on the path to fault-tolerant quantum computation. Stabilizer codes, a ce...
Different sets of local correlations are not equivalent: some fragments of reduced data uniquely determine a global quantum state, while others leave ...
Insider Brief MIT researchers have designed a quantum computing component that simulations suggest could perform faster operations while preserving st...
Insider Brief Germany’s Forschungszentrum Jülich has inaugurated a quantum computer intended to help researchers and companies test how quantum proces...
Insider Brief PRESS RELEASE — Today, Quantum Foundry Copenhagen and the Novo Nordisk Foundation announce plans to establish a new 5,300 m² quantum chi...
Quantum sensing using nitrogen-vacancy (NV) centers in diamond has emerged as a powerful platform for detecting ultra-low magnetic fields under ambien...
As quantum computing continues to scale, quantum measurement and control (QMC) are increasingly constrained by calibration workflow complexity and by ...
Distributed quantum computing (DQC) offers a promising approach to scale quantum computing by overcoming the resource limitations of a single quantum ...
High-rate quantum low-density parity-check (qLDPC) codes can substantially reduce qubit overhead relative to surface codes, but their advantage depend...
Interactions between a quantum system and its environment can inject ergotropy into the system, raising the question of the minimal dimensionality and...
There is an extensive body of research probing the potential of adiabatic quantum computation and quantum annealing to solve hard computational proble...
Floquet driving uses periodic controls to tailor the behavior of quantum systems, with applications in quantum analogue simulation, sensing, and the p...
A quantum system of any fixed dimension can be prepared in a continuum of states, yet it cannot be used to transmit an unlimited amount of classical i...
Exact CNOT synthesis asks for a minimum-size CNOT circuit implementing an invertible linear transformation. Although several related synthesis models ...
Quantum benchmarks provide compact measures of performance that are important for evaluating and comparing quantum systems. Circuit-level benchmarks a...
Quantum low-density parity-check (qLDPC) codes admit high encoding rates but require nonlocal entangling gates for syndrome measurement. Instead of ph...
Digital quantum computing platform developer SEEQC has signed a Memorandum of Understanding (MoU) with Taiwan’s Quantum Industry Technology Promotion ...
Post-quantum semiconductor hardware vendor SEALSQ Corp (NASDAQ: LAES) and embedded cryptography developer wolfSSL Inc. have announced native wolfTPM s...
We prove that, for an $n$-qubit system of dimension $d=2^n$, every state satisfying $\operatorname{Tr}(ρ^2)\le 1/(d-a_\ast)$, with $a_\ast=0.458327\cd...
Random quantum objects are powerful resources for quantum information processing, yet exact Haar randomness is costly and typically unnecessary. We in...
Researchers from MIT have designed a new qubit architecture that enables qubits to interact with each other much more quickly while remaining very sta...
We present a permutation-symmetric supporting relation between the pairwise concurrences and the three-tangle in three-qubit system, whose extrema are...
Insider Brief PRESS RELEASE — Quobly, a French quantum computing company developing silicon spin qubit processors for industrial-scale deployment, and...
Quantum error correction acts as an entropy pump, transferring noise-induced uncertainty from a protected quantum system into syndrome information sto...
High-dimensional simulation of multivariate extremes is fundamentally limited by the combinatorial complexity of dependence, often more than by the sc...
Insider Brief PRESS RELEASE – SEEQC, Inc. (“SEEQC” or the “Company”), a chip-based quantum computing company, today announced the signing of a Memoran...
Bilayer graphene (BLG) quantum dots (QDs) are a promising platform for semiconductor qubits. However, the low-frequency charge noise that may ultimate...
Quantum batteries have emerged as a promising new generation of energy-storage devices for powering quantum technologies. Long-distance charging is pa...
Insider Brief The IBM Quantum Nighthawk r2 processor can execute more than 100,000 quantum circuits per second, according to a post published on the I...
Quantum repeaters are essential for establishing long-distance quantum communication to overcome the exponential decay of entanglement due to photon l...
A key challenge in practical quantum machine learning (QML), particularly for discriminative tasks such as classification, is the limited capacity of ...
Quantum error correction (QEC) is beginning to enable logical operations that outperform their unencoded physical counterparts, but useful fault-toler...
Insider Brief PRESS RELEASE – Quobly, a French quantum computing company developing industrially scalable quantum computers based on silicon spin qubi...
Insider Brief PRESS RELEASE – Quandela, a leading player in photonic quantum computing technologies, has signed a memorandum of understanding with CMC...
Simulating quantum error correction (QEC) circuits including non-Clifford gates at scale is important to accelerate progress toward fault-tolerant qua...
Flux noise is unanimously recognised as a leading dephasing mechanism for flux-tunable superconducting qubits. However, our microscopic understanding ...
Unlike standard quantum teleportation, many-body teleportation uses scrambling to transmit quantum information. In this protocol, initially localized ...
Distributed architectures have been proposed as a pathway to large-scale quantum computers. Combined with the need for fault-tolerance, such architect...
The radiative properties of quantum emitters are profoundly influenced by their electromagnetic environment. When coupled to a waveguide terminated at...
Gottesman-Kitaev-Preskill (GKP) codes provide a family of promising schemes for encoding discrete quantum information (qudits) into infinite-dimension...
French silicon quantum computing developer Quobly has signed two strategic cooperation agreements in the Netherlands with the Netherlands Organisation...
IBM Quantum has announced the official release of IBM Quantum Nighthawk r2 (deployed as ibm_phoenix), its fastest quantum processing unit (QPU) to dat...
Photonic quantum hardware developer PsiQuantum and the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory have established a strategic s...
The demonstration that enhanced yellow fluorescent protein hosts an optically addressable spin-1 qubit in its metastable triplet state raises the pros...
Fault-tolerant quantum computing requires not only reliable logical qubit storage, but also the ability to perform high-fidelity logical operations be...
A key task in many quantum-computing applications, e.g., quantum simulation and quantum state tomography (QST), is to partition an arbitrary set of op...
Logical fusions are important for a number of tasks in quantum information, such as quantum error correction and quantum repeaters. In the photonic se...
Photon-number-resolving (PNR) detectors are essential for photonic quantum computing, where a single measurement outcome must reliably herald a specif...
Insider Brief Quantum computing users are pushing toward larger circuits while concentrating most jobs on cheaper hardware, offering an early view of ...
Continuous-variable quantum systems offer a resource-efficient route to universal quantum information processing and analogue quantum simulation of re...
Precise control of multi-qubit architectures remains a critical bottleneck in superconducting quantum processors. In this work, we investigate the syn...
Insider Brief Toronto-based materials startup Meissner has raised $2.6 million in pre-seed financing to search for superconductors that could support ...
Fault-tolerant quantum computation fundamentally relies on encoding a logical qubit into a structured block of physical qubits, typically in the tens ...
Advancing quantum information technologies requires qubits whose coherence can be precisely engineered. Among the qubit platforms in development, mole...
Present-day quantum processors are open systems in which dissipation and decoherence degrade the information carried by a quantum state as it propagat...
We construct a constant-degree and constant-gap quantum expander on $n$ qubits where each unitary can be implemented by a depth-$1$ and 1D circuit of ...
We give a sampling problem that is solvable by shallow quantum circuits, hard for polynomial-time classical algorithms under lattice-based assumptions...
Fast, high-fidelity, scalable state preparation and measurement is critical to the realization of a quantum computing system. The state-of-the-art met...
Quantum computing is entering an era where quantum processing units (QPUs) with tens to hundreds of qubits are increasingly integrated with high-perfo...
Quantum Key Distribution (QKD) offers information- theoretically secure key establishment grounded in the laws of quantum physics, yet its practical r...
Sampling-based quantum diagonalization method exploits Quantum-centric supercomputing platforms to sample bitstrings for Hamiltonian projection on a q...
This paper introduces QXymb, a general framework for constructing observational declarative twins of quantum circuits, and develops QILP-0, its first ...
Photonic fusion operations are a central primitive in photonic quantum information processing and are commonly characterized by their success probabil...
Silicon spin-qubit hardware vendor Diraq and global digital infrastructure provider Equinix, Inc. (Nasdaq: EQIX) have announced plans to deploy an eig...
Photonic quantum computing developer Xanadu (NASDAQ/TSX: XNDU) has released an expanded, milestone-driven technical roadmap detailing hardware perform...
Angle-encoded quantum kernels on tabular data collapse when the feature map is wider than the intrinsic dimension of the data. We propose the correlat...
The spherical-to-deformed quantum phase transition of the Interacting Boson Model (IBM) is investigated using the variational quantum eigensolver (VQE...
We analytically characterize entanglement generation by two paradigmatic coherently controlled quantum processes, the quantum switch and time-flip. Re...
Multi-photon dissipation -- a key resource for bosonic qubits -- is usually realized by parametrically pumping a Josephson coupler at the cost of spur...
Exchange-based semiconductor qubits encompass a broad family of encodings constructed from singlet- and triplet-like spin states, several of which are...
Insider Brief PRESS RELEASE – Anyon Systems Inc., a Canadian developer and manufacturer of full-stack superconducting quantum computing systems, and K...
Fault-tolerant quantum computation requires robust protection of encoded quantum information. In this work, we develop a representation-theoretic fram...
Practical robust self-testing of multipartite entanglement has so far been restricted to small-scale systems due to error bounds that degrade severely...
Neutral atom qubits are one of the leading approaches for implementation of a large scale quantum computer. The original proposals for neutral atom qu...
The dynamical Lie algebra (DLA) governs the controllability, expressibility, and simulation complexity of a quantum system. Explicitly computing it ha...
Insider Brief PRESS RELEASE – Xanadu Quantum Technologies Limited (“Xanadu” or the “Company”) (NASDAQ: XNDU) (TSX: XNDU), a leading photonic quantum c...
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. DiVinc...
Insider Brief PRESS RELEASE — Newly launched Finnish startup S-Transistors, originating from VTT Technical Research Centre of Finland, has raised €2.6...
We show that gravitational curvature can control the generation of nonlocal quantum correlations in a hybrid qubit-mechanical device. The tidal field ...
We formulate collider observables based on quantum steering ellipsoids (QSEs) for reconstructed bipartite systems of spin-$1/2$ particles. A collider ...
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 s...
Quantum measurement and control software developer QuantrolOx (Espoo, Finland / Oxford, UK) has partnered with quantum education provider QURECA (Glas...
Superconducting circuits play a crucial role in the advancement of quantum computing and quantum sensing. Typically such circuits require the presence...
We present FIREQ (FPGA Instrumentation for Readout and Qubit control), an open-source RFSoC-based framework for the control and readout of superconduc...
Since the seminal work of Selinger and Valiron, the standard design for quantum lambda calculi has kept the quantum state outside the program: terms m...
Intrinsic spin--orbit interaction in germanium provides electrically active flopping-mode qubits without requiring magnetic-field gradients to generat...
IBM Quantum has officially launched Qiskit Fermions (v0.1.0), an open-source software library and transpiler extension designed to express fermionic o...
Quantum key distribution (QKD) guarantees information-theoretic security by the laws of physics, but deployment at scale requires compact, manufactura...
Superpositions of macroscopically distinct coherent states, or cat states, are a key resource for quantum technologies. In particular, two-mode binomi...
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 $...
Standard universal quantum computing using exchange-only qubits typically requires three physical spins per logical qubit, leading to significant hard...
Photonic quantum computing developer Xanadu (NASDAQ/TSX: XNDU) has signed a definitive agreement with the Government of Canada securing CAD $195 milli...
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 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 co...
Entanglement of purification is a fundamental measure of total correlations whose additivity remains unresolved. We study its additivity for classical...
Mechanical resonators ultrastrongly coupled to quantum two-level systems provide a promising route towards mechanical qubits by introducing significan...
Variational quantum algorithms (VQAs) suffer from unstable optimization due to temporal noise drift and static qubit mappings that distort gradient si...
Insider Brief PRESS RELEASE – Xanadu Quantum Technologies Limited (“Xanadu”; NASDAQ/TSX: XNDU), a leading photonic quantum computing company, today an...
Quantum computers offer the potential to directly probe the dynamics of strongly coupled quantum field theories. As a step towards reaching this poten...
We introduce determinant quantum-quantum Monte Carlo (DQ$^2$MC), a quantum algorithm that lifts the auxiliary-field sampling and averaging at the oper...
We experimentally study error mitigation and finite-shot sampling on superconducting quantum hardware under a constrained execution budget. The study ...
Quantum Reservoir Computing (QRC) processes temporal data by retaining a memory of past inputs in the recurrent state of a quantum system, whereas a Q...
Nonlinear microwave resonators are a versatile tool in quantum information processing, enabling parametric amplification, continuous variable quantum ...
Using a numerically exact master equation, we demonstrate that two qubits, coupled solely through a shared damped, driven cavity, can become correlate...
Entangled photons play a crucial role in quantum applications, and determining and characterising their entanglement is vital to using them effectivel...
Entanglement gives rise to correlations between distant quantum systems that cannot be explained by local realistic theories. Bell inequality violatio...
Guest Post by Kyle Okamoto, President of Axe Compute. When people talk about quantum readiness, the conversation often moves quickly to the quantum co...
We investigate how the spatial arrangement of environment channel influences the dynamics of coherence and work extraction in a two-qubit quantum batt...
Insider Brief IBM and IonQ use very different physical systems to build quantum computers. IBM uses superconducting circuits that must be cooled to ex...
Recent advances in the alternating-bias-assisted annealing (ABAA) technique have successfully mitigated intrinsic Josephson-junction (JJ) fabrication ...
Quantum time-marching algorithms for transport PDEs often represent variable coefficients and forcing through register-expanding dilations, block-enco...
Quantum DeepONet accelerates neural-operator inference by evaluating an orthogonally parameterized network on a quantum computer, reproducing in ideal...
Illustration of the problem formalism and multi-basis encoding approach Researchers from Singapore’s Agency for Science, Technology and Research (A*ST...
We study how virtual next-to-leading-order electroweak corrections affect the quantum observables of entanglement and magic in lepton--lepton collisio...
Maximally mixed state spectral sampling is an unbiased quantum algorithm that allows for extraction of a finite-resolution spectral distribution from ...
The physics of information scrambling in quantum many-body systems is intimately related to thermalisation and emergence of chaos. However, its standa...
Rydberg entangling gates driven by a two-photon transition in alkali atoms suffer from an adverse scaling of light-shift-induced errors. Robustness 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 ex...
We present a systematic design for large-scale quantum kernel classification, demonstrated through a quantum support vector classifier (QSVC) for part...
Insider Brief Press release – Bridgewater State University has received approximately $380,000 from the Massachusetts Technology Collaborative (MassTe...
Researchers from the University of Padova, Italian photonics firm ThinkQuantum s.r.l., and the National Research Council of Italy (CNR-IFN) have publi...
Post-quantum semiconductor and digital identity developer SEALSQ Corp (NASDAQ: LAES) has announced an engineering update on QASIC (Quantum-Resistant A...
Rydberg-based two-qubit gate fidelities in neutral atom arrays are limited chiefly by laser intensity inhomogeneity and by detuning errors from freque...
While quantum computing could be the future, it is currently plagued by finicky hardware. To make the technology practical, researchers must demonstra...
Accurately estimating expectation values of observables from a finite number of measurement shots is a central challenge in quantum information scienc...
The threshold theorem states that quantum computations can be made reliable below a physical error threshold, at the cost of additional physical qubit...
The Koopman-von Neumann framework has been proposed to design quantum algorithms for non-linear dynamics. It maps a non-linear ordinary differential e...
Counting processes provide a fundamental description of stochastic events ranging from photon detection to clock ticks. A central question is how accu...
We show that the $d+0$-dimensional Yang-Lee theory describing classical Ising spins in an imaginary magnetic field can be realized, without post-selec...
Frequency encoded photonic qubits promise a scalable path towards high-dimensional quantum information processing, but require efficient components fo...
Noise-biased qubits have bit-flip errors that are exponentially suppressed relative to phase-flip errors, and offer a promising route toward fault-tol...
Nonstabilizerness, or magic, is an archetypal \emph{quantum} resource that is necessary for quantum computational advantage. Here we uncover a phenome...
Insider Brief Press release – Sparrow Quantum has announced that the company is one of 13 selected for funding under the EuroHPC Joint Undertaking’s Q...
Compressively strained Ge quantum wells in planar SiGe/Ge heterostructures are the state-of-the-art platform for hole spin qubits. While they exhibit ...
Distributed architectures extend quantum simulation of many-body dynamics beyond the reach of any single processor, with shared entanglement mediating...
IBM (NYSE: IBM) has officially completed its acquisition of Malibu-based research and development institution HRL Laboratories, LLC (HRL). The transac...
Silicon quantum computing developer Diraq has officially opened its U.S. Technology Hub in Santa Monica, California. Launching with a 20-person engine...
Strained germanium ($\varepsilon$-Ge) quantum wells on metamorphic SiGe buffers have enabled advanced hole-based spin qubit devices. Alternatively, un...
Insider Brief Researchers demonstrated quantum key distribution across an 18-kilometer free-space link by using adaptive optics to counter atmospheric...
Insider Brief Press release – Photonic Inc.’s paper on SHYPS quantum error correction codes, “Computing Efficiently in QLDPC Codes,” has been publishe...
Insider Brief Press release – Diraq, the silicon quantum computing pioneer, today announced the opening of its U.S. Technology Hub in Santa Monica, Ca...
Qubit-efficient quantum relaxations compress classical decision variables into expectation values on substantially fewer qubits. We ask what resource ...
Decoherence imposes severe limits on quantum circuit depth, motivating methods to reduce circuit depth. Operator backpropagation has recently been pro...
As quantum computers advance toward the regime of MegaQuOp machines executing millions of gates, a decoding system capable of real-time error correcti...
Quantum simulation of strongly correlated fermionic systems is among the most promising near- term applications of quantum computing, but its practica...
Programmable quantum devices nominally act on a Hilbert space whose dimension grows exponentially with the number of constituents, but the presence of...
We experimentally investigate how symmetry-protected topological order in a one-dimensional cluster state is transformed by measurement and decoherenc...
Insider Brief Press release – The U.S. National Science Foundation announced today that Princeton University will lead one of eight major initiatives ...
Correlations allowed by quantum mechanics can defy any classical explanation, with Bell nonlocality standing as their most profound and operationally ...
Photonic quantum computing developer Xanadu (NASDAQ/TSX: XNDU) and Japanese chemical manufacturer Mitsubishi Chemical have announced the second phase ...
Insider Brief Press release – Xanadu Quantum Technologies Limited (“Xanadu“; NASDAQ/TSX: XNDU), a leading photonic quantum computing company, has anno...
For photonic quantum technology applications, sources capable of emitting photons with indistinguishability close to unity are essential. Ideally, the...
Gate teleportation allows us to implement a nonlocal unitary using local operations, classical communication (LOCC), and a shared entangled state. Kno...
Fast, precise, and quantum-non-demolition (QND) readout of superconducting qubits is a fundamental component of high-fidelity quantum sensing and comp...
Although quantum error correction is widely believed to be necessary for impactful applications of quantum computers, the design of quantum error corr...
Owing to their high controllability and connectivity, one-dimensional ion chains are attractive building blocks for near-term quantum computers. Howev...
Optimized daemonic ergotropy can make entanglement thermodynamically dispensable in measurement-assisted work extraction: for a fixed system marginal,...
Neutral-atom quantum computing developer Pasqal and Saudi Arabian investment platform Eleven Ventures have signed an agreement to establish a 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 provid...
Quantum Monte Carlo (QMC) methods are among the central numerical tools for studying strongly correlated quantum many-body systems, particularly in hi...
The Vlasov--Poisson system provides the fundamental kinetic description of plasma and plays a central role in understanding collective phenomena such ...
We introduce a novel physics-guided linear mapper (PGLM) for quantum error mitigation that uses seven distinct interpretable features derived from cir...
Accurate identification of unknown quantum systems is essential for quantum computing, sensing, and control because the Hamiltonian governs quantum st...
Gate synthesis and circuit optimization are usually studied separately, and evidence on their interaction is contradictory: ZX-calculus rewriting remo...
The Boltzmann-Loschmidt dispute in 1876-1877 discussed the problem of time reversal of ther- malization from time reversible classical equations of mo...
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...
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 ordin...
Scalable quantum networks require generating remote entanglement faster than decoherence erases it, calling for nodes that combine efficient light-mat...
Microscopic two-level system (TLS) defects remain a primary mechanism of decoherence and operational instability in superconducting transmon qubits, n...
Polar molecules trapped in optical tweezer arrays offer a promising platform for quantum information processing, providing precise control and long-ra...
We present a route-resolved comparative assessment of Rigetti's Cepheus-1-108Q and IBM Heron-r2 processors using the established 'do-nothing' state-tr...
Conventional Quantum Key Distribution (QKD) requires the transmission of qubits proportional to or exceeding the length of the key, as protocols such ...
Quantum processors encode an N-point field in log_2(N) qubits, which renders nonlinear wave equations an important application for quantum simulation....
Germanium hole spin qubits are a leading platform for semiconductor quantum computation due to their strong spin-orbit coupling, all-electrical operab...
Stabilizer states play a central role in quantum information theory, and understanding their entanglement has motivated a large body of work. A well-s...
Precise measurement of the resonance frequencies of microwave and optical cavities is a foundational capability across quantum technologies. One of th...
Insider Brief Every quantum computer commercially available today belongs to the same category. Whether it is IBM‘s quantum systems, Google‘s supercon...
Bell-state measurements are essential ingredients in many protocols for quantum information processing, ranging from quantum teleportation and dense c...
We study quantum dynamics through the lens of entanglement generation and characterize the underlying unitary evolution by the distinct signatures it ...
Applying controlled unitary gates to generate entanglement between qubits is a routine task in both quantum communication and computation. The existin...
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...
We provide a perspective into measuring the quantum information spreading by introducing N-operator correlators. Leveraging the idea from N-point corr...
Sparse quantum state preparation concerns an $n$-qubit target state that is a superposition of only $d \ll 2^n$ computational basis states. Existing a...
Superconducting quantum hardware developer Rigetti Computing, Inc. (Nasdaq: RGTI) has reorganized its operating structure to separate commercial syste...
Quantum computing is entering a transitional regime between noisy intermediate-scale quantum (NISQ) processing and early fault-tolerant quantum comput...
A $U(1)$ quantum rotor pairs a periodic angle with an integer-valued conjugate momentum, and occurs in molecular rotation, superconducting phase-charg...
Many mainstream quantum programming languages confine higher-order structure to a classical host while restricting the quantum layer to first-order op...
Non-unital noise is a fundamental feature of open quantum systems, governing energy exchange and inducing state translations on the Bloch sphere. Whil...
Identifying the entanglement structure of a many-body quantum state, namely how its constituents partition into unentangled blocks, is a central task ...
Achieving fault-tolerant quantum computing at a practical scale demands quantum error correction (QEC) codes with high encoding rates. Quantum low-den...
Large Fock states are important resources for bosonic quantum information and quantum-enhanced metrology, but preparing them with high probability at ...
Quantum computing is a quickly growing field that is promising various advantages compared to conventional computing. However, currently stand-alone q...
We study bipartite entanglement from the convex geometry of quantum states. Taking the maximally mixed state as a reference point, we define a geometr...
Insider Brief Press release – Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti”), a pioneer in full-stack quantum computing, today announced a new ope...
We develop a quantum algorithm for solving the dynamics of the nonlinear viscous Burgers equation. We apply the Carleman linearization procedure on th...
These notes develop four interconnected ways of reading a quantum circuit. A circuit for us begins as an operational composition of gates; then, it be...
We investigate quantum thermometry in Ohmic-type reservoirs using two-qubit probes within an exactly solvable pure-dephasing framework. By analyzing t...
Mid-circuit measurements provide direct access to trajectory-level observables, revealing dynamical structures in many-body systems that are invisible...
Quantum state transfer on qubit lattices is a crucial step in a panoply of quantum information processing tasks. Understanding its fundamental limits ...
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 evolut...
The practical implementation of quantum algorithms on noisy intermediate-scale quantum devices encounters operational limitations due to decoherence a...
Calderbank-Shor-Steane (CSS) codes, constructed from nested classical codes $C_2 \subseteq C_1$, are typically optimized for good code parameters. How...
A research team led by Cornell University Assistant Professor Valla Fatemi has developed a low-temperature fabrication process for tantalum-based supe...
Practical fault-tolerant quantum computing (FTQC) requires efficient lattice surgery (LS), so that large algorithms fit on resource-constrained quantu...
Silicon spin-qubit hardware developer Diraq has opened its first U.S. research and measurement laboratory in Chicago, Illinois. Situated within the Il...
Two connected modular cryostat prototypes operating in Poughkeepsie, NY. IBM (NYSE: IBM) has announced the successful linking and cooldown of its firs...
Clifford circuits play a foundational role in quantum computing, particularly due to their importance in quantum error correction and fault-tolerant l...
Insider Brief Press release – IBM (NYSE: IBM) today announced it has successfully joined and cooled down two cryogenic modules into a single environme...
Surface acoustic wave-based resonators are sensitive probes of condensed matter systems, as well as surface-selective sensors for chemistry and biolog...
Insider Brief PRESS RELEASE — To commercialize quantum computing, manufacturers need high-quality superconducting materials for microchips, but they a...
Pauli Check Sandwiching (PCS) is a quantum error detection (QED) technique that protects a quantum circuit by utilizing a pair of controlled Pauli ope...
Teleporting unknown quantum states between distant nodes of a network is a significant feature of quantum communication. Few studies, however, have be...
Quantum software and materials discovery company OTI Lumionics, in collaboration with the Samsung Advanced Institute of Technology (SAIT), has publish...
As quantum processors scale to hundreds of qubits, execution speed is a critical performance dimension alongside scale and quality. While substantial ...
We study the dissipative dynamics of a Majorana tetron qubit in the presence of extrinsic quasiparticle poisoning due to the coupling to external lead...
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 di...
Neutral-atom arrays are emerging as a leading platform for scalable quantum error correction (QEC). Qubits are routed and reused across the array, whi...
In fault-tolerant quantum computing systems with biased noise, Clifford deformation can substantially reduce the logical error rate (LER) without addi...
Erbium ions (Er$^{3+}$) in cerium dioxide (CeO$_2$) represent a promising spin-photon interface for quantum communication, but the mechanisms limiting...
Insider Brief PRESS RELEASE — OTI Lumionics, a leader in advanced quantum simulations and solutions for next-generation materials discovery, in collab...
Guest post by Professor Callum Littlejohns, Deputy Director at CORNERSTONE, and Dr Amit Agrawal, Associate Professor in Optical Engineering at the Uni...
The quantum approximate optimization algorithm (QAOA) targets NP-hard maximum-likelihood (ML) detection in multiple-input multiple-output (MIMO) syste...
Noisy Bell mixtures may carry entanglement, standard teleportation usefulness, projective-measurement steerability, and optimized Cavalcanti-Jones-Wis...
Variational quantum sensing offers a promising route to high-precision parameter estimation, but its performance depends strongly on the circuit archi...
We systematically characterize quantum entanglement in all sixteen combinations of two-qubit Bell states across three operational regimes: pure superp...
Multipartite entanglement remains a challenging and not fully understood aspect of quantum information. Monogamy-of-Entanglement (MoE) games have been...
Neutral-atom arrays have rapidly advanced to support thousands of qubits and execute high-fidelity logical operations. However, these processors remai...
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 le...
Federated deployments of variational quantum classifiers are attractive for cross-organisation risk prediction in supply chains, because raw data neve...
Quantum computers are noisy; without quantum error correction (QEC), deep programs fail as qubits lose information due to decoherence. Among QEC appro...
Superconducting circuits (SCs) are the cornerstone of modern quantum technology, enabling scalable computing through coherent control of macroscopic q...
We study quantum simulation of SU(3) non-Abelian gauge theory dynamically coupled with fundamental fermions in $3+1$ dimensions by employing the latti...
Germanium hole spin qubits are a promising and versatile platform for quantum computation and simulation. In this system, strong spin-orbit interactio...
We demonstrate a static, disorder-free spin chain Hamiltonian which, by tuning the coupling to an auxiliary qubit, realizes a crossover between super-...
Full-stack quantum and AI startup QpiAI has inaugurated an 8-inch quantum processing unit (QPU) manufacturing facility in Jakkur, Bengaluru. Formally ...
The predictive simulation of molecules and materials has had a broad and significant impact. It nevertheless remains constrained by the cost of accura...
Insider Brief Quantum computing startup QpiAI has opened a manufacturing facility in Bengaluru capable of fabricating superconducting quantum processo...
Quantum processors with native multi-qubit gates may offer very efficient implementations of near-term quantum algorithms on noisy hardware. Here, we ...
The connection between Krylov complexity and Berry phase in adiabatic dynamics is investigated under the instantaneous eigenstate basis of a slowly ev...
Quantum circuits are fundamental components of quantum computing, and state-vector-based quantum circuit simulation is a widely used technique for tra...
Japanese industrial conglomerates Mitsui & Co. and Mitsubishi Electric have published joint experimental benchmarks evaluating the Quantum Fourier Tra...
Hybrid approaches that combine different spin qubit encodings offer promising advantages. In particular, the additional degrees of freedom available i...
Insider Brief Press release – Innosphere, on behalf of the National Science Foundation ASCEND Engine, has entered into a Memorandum of Understanding (...
The authors present a rigorous empirical evaluation of three distinct optimization paradigms for institutional factor portfolio construction: an entro...
Quantum diffusion models typically parameterize forward corruption by raw channel strength, even though equal parameter increments need not erase equa...
Insider Brief Silicon spin qubit company Diraq has published a blog post arguing that the quantum computing industry’s hiring model which is historica...
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...
We show that the network of quantum register states of a quantum computer (QC), coupled through residual two-body interactions between qubits, exhibit...
Molecular spins represent a versatile platform for quantum information science, with the potential to offer chemically tunable, addressable qubits. Ho...
Certifying genuine multipartite entanglement in quantum systems can require a number of measurements that grows exponentially with the system size. He...
In quantum physics the order in which different operations occur can be placed in superposition. The resulting processes have an indefinite causal ord...
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....
The spin of a quasiparticle trapped in a quantum dot Josephson junction forms the basis of an Andreev spin qubit (ASQ): a semiconductor-superconductor...
Characterising the efficiency with which designs over various subsets of the unitary group may be constructed is an important goal of quantum informat...
Quantum technology has the potential to transform scientific discovery, but quantum advantages often require processing capabilities well beyond the r...
Unitary designs provide finite-moment approximations to Haar-random unitaries, with wide-ranging applications across physics and quantum information, ...
We propose a unified physical principle for entanglement harvesting: the entanglement that two localized detectors can extract from a quantum field is...
The University of Guelph (U of G) and photonic quantum computing developer Xanadu Quantum Technologies (NASDAQ/TSX: XNDU) have signed a Memorandum of ...
Photonic quantum computing developer Xanadu Quantum Technologies Limited (NASDAQ/TSX: XNDU) has announced a strategic research partnership with the Un...
The trapped-ion optical-metastable-ground ($\textit{omg}$) architecture for quantum processors promises the full functionality of two-species experime...
Determining whether a target unitary can be implemented within a prescribed quantum circuit architecture is a fundamental problem in quantum informati...
We classically simulate the IBM doped Clifford random circuit sampling experiment, comprising $70$ qubits, $70$ entangling layers, and $468$ inserted ...
Ensuring ancilla safety is a critical correctness requirement for quantum compilation, since ancilla qubits are routinely introduced to implement comp...
We introduce an operational measure of nonclassicality for qubit systems based on the violation of Kolmogorov consistency conditions in sequential mea...
From fluid flow and transport to collective dynamics, numerical simulation of nonlinear partial differential equations underpins modern scientific com...
We investigate how network geometry and excitation sector separately control pairwise entanglement decay in asymmetric multipartite $W$ states. To dis...
Scientific simulations demand methods combining scalability with predictive accuracy. Density Functional Theory (DFT) on High-Performance Computing (H...
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...
Shanghai-based photonic quantum firm TuringQ has officially initiated pre-IPO tutoring with the Shanghai branch of the China Securities Regulatory Com...
Installation of an integrated-photonics surface ion trap into an experimental vacuum system. The National Science Foundation (NSF) has selected a mult...
Rigetti Computing, Inc. (Nasdaq: RGTI) has reported its financial results for the second quarter ended June 30, 2026. The Berkeley-based superconducti...
Using light to process quantum information is one of the most promising approaches to building future quantum computers. Light particles, known as pho...
High rate quantum low-density parity-check codes on reconfigurable neutral-atom arrays can reduce the overhead of quantum error correction, but near-t...
This paper investigates a quantum extension of classical Multiple-Input Multiple-Output (MIMO) communication in which the conventional linear channel ...
Flip-chip integration offers a promising route toward scalable superconducting quantum processors and hybrid semiconductor-superconductor quantum devi...
Insider Brief Press release – QC Ware (“QC Ware” or the “Company”) today announced a technology demonstration of a hybrid quantum-classical computatio...
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...
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 p...
The failure of quantum thermalization due to Many-Body Localization (MBL) has evolved from a theoretical concept in spin chains to an experimental rea...
The quantification of multipartite entanglement remains a long-standing open challenge in quantum information theory with major implications for quant...
Insider Brief Press release – Uviquity, a deep-tech company building integrated photonics on an aluminum nitride (AlN) platform for quantum and ultrav...
Neutral atoms trapped in optical tweezers and excited to Rydberg states, together with trapped ions, are among the most advanced platforms for quantum...
The amplification of quantum information carried by a single quantum excitation is a recurring challenge across diverse quantum platforms. The couplin...
Distributed quantum computing provides a scalable route for executing quantum circuits beyond the capacity limits of a single quantum processing unit ...
Electron spin qubits in microwave cavities provide a promising platform for scalable quantum computing hardware, leveraging long coherence times, char...
We test whether a parameterized quantum circuit (PQC) improves a hybrid quantum-classical model's performance on classical datasets, using an interfac...
Shor's algorithm is a canonical quantum supremacy target whose core operation relies on the Quantum Fourier Transform (QFT). We resolve an open questi...
Xanadu Quantum Technologies Ltd. (NASDAQ/TSX: XNDU) has announced its financial results for the second quarter ended June 30, 2026. The Toronto-based ...
We apply time-reversal symmetry to quantum codes and show that it imposes parity selection rules on the physical error algebra. A time-reversal-invari...
Topologically ordered phases naturally realize quantum error correction through nonlocal encoding of quantum information. More recently, conformal fie...
Quantum errors are a normal part of quantum computing because fragile physical qubits (the tiny components storing data) can easily break down because...
Quantum optimization has attracted growing interest as quantum hardware continues to improve, yet state-of-the-art classical solvers remain a formidab...
Mapping quantum programs to restricted physical chips requires SWAP operations, incurring depth and error penalties. In symmetric programs, this routi...
High-dimensional nuclear spins offer a hardware-efficient route to quantum error correction (QEC), with the spin cat code providing intrinsic robustne...
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 p...
Reaching fault tolerance means scaling qubit counts by orders of magnitude, a jump that conventional superconducting architectures cannot sustain with...
Quantum state tomography is fundamental to quantum information processing but becomes infeasible at scale due to the exponential growth of the state s...
Insider Brief Xanadu Quantum Technologies reported higher year-over-year second-quarter revenue while stepping up investment in research, manufacturin...
Distributing entanglement between distant qubits is a crucial element of scalable quantum computing. Here, we describe a scalable quantum interconnect...
Non-Abelian anyons arise as exotic excitations in fractional quantum Hall (FQH) matter and have proved very elusive to realize in conventional platfor...
Perfect prepare-and-measure games exhibit an all-or-nothing quantum advantage: a quantum system of dimension $d$ satisfies every prescribed winning co...
Neutral atom quantum computing utilizes laser-trapped neutral atoms as qubits and realizes quantum logic gate operations through Rydberg-state interac...
Extracting total correlations from a quantum system usually requires reconstructing its state, whereas many experiments access only a few measurement ...
All realistic quantum systems are inevitably in contact with the environment. Suppressing theimpact of environmental noise is a critical challenge in ...
Israeli quantum startup Qarakal Quantum Ltd. has officially launched Pangaea, a modular, three-dimensional superconducting quantum computing architect...
Dynamic quantum circuits (DQCs) provide a hardware-efficient route to quantum computing by reducing physical-qubit overhead and compressing circuit to...
Quantum platform developer IonQ (NYSE: IONQ) has signed a Memorandum of Understanding (MOU) with Sandia National Laboratories to pursue the co-design ...
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 buildi...
Schrödinger cat states, representing coherent superpositions of macroscopically distinguishable states, are indispensable nonclassical resources for c...
High-coherence superconducting cavities offer a promising platform for quantum information, with long coherence times and negligible intrinsic dephasi...
Partial dynamical symmetry (PDS) is an algebraic structure in which a prescribed symmetry is neither exact nor completely broken: a subset of eigensta...
Measurement-based quantum simulation (MBQS)---a recently proposed architecture for simulating lattice gauge theories---implements Hamiltonian dynamics...
It is well established that quantum strategies outperform classical ones in several communication tasks. We study the quantum communication complexity...
Quantum error correction (QEC) is indispensable for building scalable fault-tolerant quantum computers. Effective QEC demands stringent real-time deco...
Quantum error correction (QEC) and Quantum Darwinism describe opposing consequences of system-environment interactions: QEC seeks to preserve logical ...
The influence of environmental decoherence on quantum teleportation is investigated by considering the three-qubit Maximally Sliced (MS) state as the ...
Symmetry-protected topological (SPT) phases provide a platform for encoding quantum information in protected boundary degrees of freedom. Here we stud...
Vacuum Rabi oscillations between a single photon and a single spin demonstrate the capability of harnessing light-matter interaction at the level of a...
Insider Brief Press release – QuiX Quantum today announced the commercial availability of Alquor 2.0, the next generation of its rack-mountable quantu...
Classical simulation of quantum circuits is an essential tool in quantum information science, but its applicability is constrained by the exponential ...
Integration of quantum optical technique on-chip is crucial for large scale applications of quantum technology, which were proven in a free space envi...
Tokyo-based optical quantum startup OptQC Corp. and telecommunications giant NTT, Inc. have signed a capital and business alliance agreement to accele...
Students participating in hands-on STEM activities. Source: PsiQuantum Photonic quantum computing developer PsiQuantum has announced a $250,000 philan...
Protected superconducting qubits such as the $0$-$π$ qubit promise to substantially suppress error rates, facilitating fault-tolerant quantum computin...
We introduce a novel multipartite entanglement-assisted classical communication task, referred to as dense coding swapping, in which legitimate partie...
Monitored random Clifford circuit is a paradigmatic platform for exploring non-equilibrium quantum many-body dynamics using quantum-information method...
Quantum algorithms based on linear-system approaches for solving differential equations demand qubit and precision resources beyond near-term capabili...
Photonic multi-qubit entanglement is key to optical quantum information processing, particularly universal quantum computing. Yet multi-photon sources...
We investigate a quantum Otto engine (QOE) constructed from the two-qubit quantum Rabi model, operating within a cavity quantum electrodynamics (QED) ...
The standard benchmark for high-dimensional entanglement is the number of dimensions in which entanglement must be present in order to generate the st...
Readable error records can protect quantum sensing because they prevent physically distinct noise trajectories from being irreversibly mixed. A finite...
Quantum resource theory has sharpened our understanding of the intrinsic complexity of quantum systems, particularly their classical simulability. How...
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 U...
Many-body localization (MBL) is a dynamical phenomenon that describes the non-ergodicity of isolated quantum many-body systems. In contrast to thermal...
Insider Brief Press release – OptQC Corp. (Headquarters: Toshima-ku, Tokyo; Representative Director and CEO: Kan Takase; hereinafter “OptQC“) and NTT,...
In spite of recent advances, quantum computers are expected to be sufficiently noisy in the coming few years to the extent of limiting quantum chemica...
Fault-tolerant quantum computing requires classical decoders that keep pace with the underlying hardware, translating syndrome measurements into corre...
Quantum error correction (QEC) is the most promising route toward fault-tolerant quantum computing and, thus, useful quantum computers. QEC operates a...
We introduce Pangaea, a fault-tolerant quantum architecture that uses a quantum bus to mediate logical operations between remote patches of two-dimens...
Magnonic systems are a promising resource for quantum technologies because of their ability to couple significantly disparate quantum platforms and th...
Quantum metrology, which addresses parameter estimation in quantum systems, has broad applications across science and technology. Conventional metrolo...
Superconducting quantum computer developer IQM Quantum Computers (Nasdaq: IQMX) and European rail operator Deutsche Bahn have published joint research...
Researchers from the Cleveland Clinic and IBM Research have developed a quantum machine learning framework to predict which tumor gene mutations gener...
Phonons hold promise for storing and transferring quantum information, including in mechanically-mediated quantum interconnects between superconductin...
A key enabling feature of future quantum networks is interoperability between platforms that operate at different wavelengths and with different qubit...
Qubit loss occurs when the physical carrier of a qubit leaves the computational system without directly revealing the event's location. Such errors ar...
Insider Brief Press release – SEALSQ Corp (NASDAQ: LAES), (“SEALSQ” or “Company”), a company focused on semiconductors, PKI, and post-quantum technolo...
Quantum error correction (QEC) codes can correct twice as many erasure errors as Pauli errors. Because of this scaling advantage, there is significant...
Semiconductor spin qubits are one of the most promising building blocks for future quantum computers, but turning them into a working, large-scale qua...
Author(s): Lee Peleg, David Schwerdt, Jonathan Nemirovsky, Yotam Shapira, Nitzan Akerman, Ady Stern, Amit Ben Kish, and Roee Ozeri A new polynomial-ti...
We propose a protocol where chiral magnons mediate a state transfer between two distant spin qubits. The protocol is implemented by varying the coupli...
Silicon-based donor flip-flop qubits offer a promising path toward scalable, fault-tolerant quantum computing by combining the long coherence times of...
Insider Brief Press release – When will meaningful applications of quantum computers arrive? The standard answer has been at least five to ten years, ...
Nuclear spin qubits in silicon offer exceptionally coherent quantum memory, and optically-interfaced spins are a promising platform for both quantum n...
IBM and a coalition of research collaborators—including the University of Chicago, Qedma Quantum Computing, Algorithmiq, RIKEN, and BlueQubit—have ann...
High-rate quantum low-density parity-check (qLDPC) codes encode many logical qubits with low physical-qubit overhead, but realizing efficient fault-to...
We develop a hybrid qubit--qumode algorithm for nonlinear ordinary differential equations of the form $\dot{\mathbf{x}}=\mathbf{f}(\mathbf{x})$ with d...
Wave equations provide a natural testbed for near-term quantum simulation of partial differential equations, but hardware demonstrations have remained...
In the original Hayden--Preskill recovery, the post-injection scrambler and initial state are {\it not related}. We extend this setup in two ways: by ...
We show that global optimal control can drastically suppress the impact of decoherence in globally driven superconducting quantum computing architectu...
Analog quantum processors based on Rydberg atom arrays are a powerful platform for many-body quantum simulation, combinatorial optimization, and graph...
Optimization problems are among the leading candidates for industrially relevant quantum advantage. Decoded quantum interferometry (DQI) has been prop...
Insider Brief PRESS RELEASE — Cleveland Clinic and IBM researchers are using quantum computing to tackle one of the most challenging problems in immun...
Topological data analysis (TDA) provides a powerful framework for extracting information about the shape of complex, unstructured data, but the classi...
Modular quantum computing is a leading paradigm for scaling quantum computation beyond the resource limitations of monolithic devices. In this archite...
Demonstrating a practical quantum advantage remains a central goal in quantum information science. While quantum computational supremacy is still tech...
The Non-Equilibrium Green's Function (NEGF) is the standard formalism for nano-scale electron transport. By recasting the NEGF scattering problem as a...
Companies are making sure we have a surplus of options for building qubits.
Multi-degree-of-freedom photonic quantum processing requires routing between degree-of-freedom (DOF) qubit encodings on a single photon. A SWAP betwee...
Erasure-error detection can improve the efficiency of quantum error correction by revealing the times and locations of their error events. In this wor...
In a study published today in Nature, hardware developer HRL Laboratories—jointly owned by Boeing and General Motors—demonstrated an 18-qubit silicon ...
Native multi-qubit gates could reduce the overhead associated with decompositions into single- and two-qubit operations, but whether they can simultan...
Singlet-triplet qubits offer an attractive encoding for semiconductor quantum computing, combining ancilla-free readout, reduced sensitivity to common...
Understanding the boundaries between quantum thermalization and localization in many-body systems remains a central frontier of condensed matter and q...
Predictive simulations of catalytic interfaces require correlated electronic-structure treatments that describe localized chemical transformations whi...
Insider Brief PRESS RELEASE — HRL Laboratories published a quantum computing milestone in Nature today: a quantum processor that runs itself. Quantum ...
We propose a sparse computational-basis encoding of voxelized molecular geometries that converts molecular reconstruction from full-state tomography i...
Quantum technologies are devices and systems that exploit the laws of quantum mechanics and could perform tasks that are difficult or impossible to ta...
Insider Brief PRESS RELEASE — A new concept from Warwick researchers could help solve one of the biggest challenges to building large-scale quantum co...
We demonstrate an end-to-end hybrid quantum-classical optimisation framework based on Benders decomposition, capable of solving mixed-integer linear p...
This thesis explores the role of modes, states, and symmetries in quantum optics, within the context of quantum information and quantum metrology. It ...
Randomized compiling (RC) is the standard technique for converting coherent (systematic) gate errors into stochastic noise. The prevailing view is tha...
We propose a rapid adiabatic passage (RAP) scheme based on level-crossing-free pulses for deterministic generation of multiqubit entangled states in R...
Quantum generative modelling casts sampling as a generative task: a parametrised quantum circuit is trained such that sampling reproduces a target pro...
We investigate microscopic mechanisms underlying decoherence-induced transitions between topologically ordered states. As a first case study, we analy...
The dynamics of a nuclear spin bath generates magnetic noise that is a key contributor to the decoherence of electron spin qubits in electrostatically...
Sampling-based proposals are prominent candidates for demonstrating quantum computations beyond the reach of classical supercomputers. However, it has...
Quantum error correction (QEC) is indispensable for scalable fault-tolerant quantum computing. However, discovering QEC codes that remain effective is...
Quantum computers are moving from research laboratories to industrial machines accessible via the cloud and integrated into high-performance computing...
The quantum superpositions of coherent states offer an alternative to the conventional qubit-based encodings by harnessing the large Hilbert space ava...
Collective excitations in ordered subwavelength atomic arrays can exhibit strongly suppressed radiative decay due to interference between light scatte...
Entangled states of light lie at the heart of photonic quantum technologies, from distributed quantum communication to quantum-enhanced measurement an...
When a photon and one member of an entangled photon pair are jointly projected onto a Bell-state measurement (BSM), the quantum state of the photon ca...
A new concept from Warwick researchers could help solve one of the biggest challenges to building large-scale quantum computers: enabling communicatio...
Passive linear optics is a restricted model of quantum computation, with complexity-theoretic evidence of quantum advantage for sampling tasks and low...
Optimal control problems arise in a wide range of scientific disciplines, but the corresponding optimization algorithms often display a strong depende...
Variational quantum algorithms offer a promising route to combinatorial optimization, but their applicability is limited by the challenge of encoding ...
Quantum networks can enable distributed computing and sensing. To realize these capabilities securely, quantum identity authentication is essential. W...
We investigate thermal quantum correlations in a system of two coupled superconducting spin qubits described by an effective Andreev spin-qubit Hamilt...
Insider Brief PRESS RELEASE — Researchers from the Universities of Amsterdam and New South Wales have answered a question that has been around for dec...
Quantum software provider Quantum Elements has released Orbit, an advanced error suppression tool accessible as a Qiskit Function in the IBM Qiskit Fu...
The computational workflow of defect candidate search with critical parameters. An international research team led by Professor Hosung Seo at Sungkyun...
Insider Brief Most quantum computers rely on extreme cooling to keep their qubits stable. Photonic quantum computers take a different route by using p...
Post-selected stabilizer state preparation is a necessary subroutine in fault-tolerant quantum computation, both for initialization of logical qubits,...
The promise of quantum computing is to solve complex problems faster and more energy-efficiently than today's supercomputers—from optimizing logistics...
Quantum networks promise secure communication, distributed sensing and modular quantum computing by interconnecting distant quantum nodes through phot...
This is a short study of an approach offering high tolerance to damage (i.e. defects or 'drop outs') in solid state fault-tolerant quantum computing. ...
We introduce Quantum-Informed Surrogate Sampling (QISS), a post-processing framework that generates candidate solutions to combinatorial optimization ...
Insider Brief PRESS RELEASE — A research team led by SKKU Professor Hosung Seo of the Department of Quantum Information Engineering and the SKKU Advan...
Tantalum has been demonstrated as a promising material for superconducting qubits. However, comparatively little attention has been given to its nitri...
A research team led by SKKU professor Hosung Seo of the Department of Quantum Information Engineering and the SKKU Advanced Institute of Nanotechnolog...
Insider Brief Quantum computing is often portrayed as a race to build better qubits, but this is just part of the bigger challenge. Beneath every qubi...
Capacitive loading has emerged as a major obstacle to scaling fluxonium qubits from one-dimensional to highly connected two-dimensional (2D) architect...
High-dimensional qudit (i.e., $d$-level or $d$-state) systems outperform two-dimensional qubit (i.e., 2-level or 2-state) systems in some quantum info...
A quantum battery is a novel energy storage device that operates on the principles of quantum mechanics. To enhance the charging performance of quantu...
Photonic quantum sensing often uses low-rank entangled probes such as Greenberger-Horne-Zeilinger (GHZ), Bell, and NOON states. Although these probes ...
We give, to our knowledge, the first plain-model, one-time information-theoretically secure, efficient unclonable encryption scheme for one classical ...
Sending quantum information through a chain of qubits, like energy through a Newton's cradle, could be the key to faster operations and take quantum c...
Silicon spin qubits are a leading platform for scalable quantum computing, but their performance is limited by charge noise, widely attributed to two-...
To maximize the value of fault-tolerant quantum computers, it is essential to develop concrete applications beyond well-established domains such as ch...
We present a strategic plan for neutral atom quantum computation, bringing together hardware development and theory advancements to achieve the goal o...
Variational quantum algorithms are a leading approach to near-term quantum computing, but their scalability can be limited by barren plateaus and the ...
Chiral quantum light-matter interfaces, where the internal spin state of a quantum emitter determines the direction in which it emits, are essential b...
IBM (NYSE: IBM) has signed a definitive agreement to acquire HRL Laboratories, LLC (HRL), the Malibu-based research and development institution jointl...
Implementing controlled dissipative dynamics is a powerful approach for state preparation in a variety of contexts, including the preparation of remot...
Recent experiments on quantum computers have challenged the limits of classical computation in chemistry, simulating ground states of strongly correla...
Quasiparticles are a prominent decoherence source in superconducting qubits, but their effects are notoriously difficult to isolate in fluxonium. Unli...
Repeated-interaction machines distinguish heat-like from work-like resources through the steady states they generate, but whether topology can control...
This podcast also explores the intersection of general relativity and quantum information The post Quarks and qubits: how quantum computing could tran...
Neutral atom quantum systems offer a promising pathway to large-scale quantum computing due to high qubit uniformity and flexible connectivity. To exp...
Quantum-kernel methods encode a dataset's geometry in a Gram matrix, so learning claims on hardware kernels assume the intended geometry survives exec...
Sympathetic cooling of data qubits by coolant ions is an essential technique for trapped-ion quantum computing. Conventionally a second ion species is...
Photonic quantum computing developer PsiQuantum has signed a $125 million expanded tasking agreement with the Defense Advanced Research Projects Agenc...
Insider Brief Press release – Quantum Computing Inc. (“QCi” or the “Company”) (Nasdaq: QUBT), a vertically integrated quantum company pioneering photo...
Qubits with strongly biased noise, in which phase-flip errors are orders of magnitude more frequent than bit-flips, arise both naturally, as in electr...
Quantum nonlocality based on the violation of Bell-like inequalities constitutes a fundamental feature of quantum physics and drives the development o...
We propose a minimal quantum-optical scheme for generating hybrid entanglement between photon polarization and electronic orbital angular momentum in ...
German quantum computing startup SAXON Q has announced the commercial release of the SXQ128 (128 qubits) and the SXQ512 (512 qubits), marking the firs...
Quantum simulation of open quantum systems offers a pathway towards better understanding various non-equilibrium physics that would otherwise be chall...
This paper introduces an interactive music system with quantum musical agents that communicate by teleporting quantum states to one another. Human per...
Insider Brief Researchers have experimentally demonstrated a new type of superconducting quantum circuit that reproduces a long-predicted gauge symmet...
While entanglement is known to enable exponential improvements in the sample complexity of quantum learning, it remains unclear which properties of en...
While decoherence is known to erode classical hardness in quantum random sampling, the impact of coherent spatial disorder remains an open question. W...
The Dicke model provides a fundamental description of collective light-matter interactions and has long served as a testbed for exploring a wide range...
A driven qubit exchanges energy with the propagating modes that drive it. When two spatially separated modes drive a single qubit with opposite amplit...
This post was contributed by Dimitar Trenev, Sebastian Stern, Tyler Takeshita, Cedric Lin, Peter Komar, Pooja Rao, Jerome Gonthier, and Elica Kyoseva....
We construct and experimentally implement compact gate-native circuits that simulate the state-transfer interference underlying three- and four-level ...
Variational Quantum Algorithms (VQAs) are a leading paradigm for near-term quantum computing, combining parameterized quantum circuits with classical ...
We investigate the topology of the set $\mathsf E$ of entangled bipartite density operators acting on $\mathbb{C}^{n_1}\otimes\mathbb{C}^{n_2}$. We st...
Pauli-based simulators offer a promising route to large-scale classical simulation of quantum circuits in the low-magic regime. Yet their applicabilit...
We provide a formal framework for Continuous-Variable Quantum Computing (CQC). While CQC is supported by photonic quantum hardware, we are not aware o...
Quantum machine learning on real noisy intermediate-scale quantum (NISQ) hardware has remained largely confined to binary or few-class tasks, limited ...
Insider Brief PRESS RELEASE — IQM Quantum Computers (Nasdaq: IQMX), a global leader in full-stack superconducting quantum computers, today published t...
Bell nonlocality is both a defining signature of entanglement and a key quantum information resource. However, visualizing and certifying nonlocal cor...
Parametric frequency modulation is a standard tool in superconducting circuits for activating tunable interactions and implementing quantum gates. Her...
We develop a sparse operator-centric realization of $n$-qubit variational quantum algorithms in the complex Clifford algebra $\mathrm{Cl}(2n,\mathbb{C...
The inevitable leakage of energy and information from a quantum system into its surrounding environment is the enemy of quantum technology. Now, resea...