499 curated articles
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 multimode circuit that encodes multiple qubits and enables native multi-qubit gates in a device consistin...
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...
A multi-institutional collaboration including Quantinuum, the University of Chicago Pritzker School of Molecular Engineering (UChicago PME), Harvard U...
IBM has announced two major advancements this past week, spanning both its quantum hardware and software ecosystems. Hardware: 25x Faster Qubit Resets...
Quantum LPDC codes provide a substantial reduction in qubit overhead required for fault-tolerant quantum computation compared to surface code, thanks ...
Interactions of cosmic rays and other forms of ionizing radiation pose a significant challenge to the reliable operation of state-of-the-art quantum d...
While quantum computers promise to solve classically intractable problems, identifying the point at which fault-tolerant quantum computation outperfor...
Characterizing the Hamiltonian that a quantum processor actually implements is central to calibrating and validating current quantum hardware. Many de...
We give a closed-form construction of the $n$-qubit Elegant Joint Measurement (EJM) proposed in [PRL \textbf{136}, 190201 (2026)] and show that it is ...
Hybrid quantum systems offer a route to combining the complementary strengths of distinct quantum platforms while mitigating their limitations. A part...
A significant challenge in the field of large-scale fault-tolerant quantum computation is the influence of noise. In addition to the influence of nois...
In contrast to a classical bit, which can only take the value $0$ or $1$, its quantum counterpart -- a qubit -- can exist in a superposition of $0$ an...
We consider whether every quantum random access code (QRAC) with density-operator encodings and arbitrary decoding measurements obeys the conjectured ...
Neutral-atom arrays and trapped-ion crystals offer complementary strengths for fault-tolerant quantum computing but lack a fast way to deterministical...
Learning a classical description of a quantum state is a fundamental task in quantum computation. Among the most important classes of quantum states a...
Alternating Current Optimal Power Flow Unit Commitment (AC-OPF-UC) is a difficult mixed-integer nonlinear optimization problem that combines binary ge...
In the Hayden--Preskill protocol, the decoder is usually assumed to know the microscopic identity of the collected output qubits. We study what happen...
We characterize and compare the inherent interpretability offerings of a standard linear model with a single qubit mixed state model for the task of s...
Quantum entanglement is the fundamental hallmark of quantum mechanics and a core resource for realizing long-distance quantum communication and scalab...
Subspace Quantum Diagonalization (SQD) recovers ground-state energies by classically diagonalizing a Hamiltonian in the subspace spanned by quantum sa...
Low-overhead quantum error-correction schemes are essential for enabling quantum computation on registers containing multiple logical qubits. For plan...
We study a finite-time quantum information engine in which a two-level system is measured by a quantum harmonic oscillator acting as a meter and where...
Exact fermion to qubit transformations are conventionally regarded as algorithmic tools that translate many-body Hamiltonians into qubit representatio...
Gauge theories and quantum error-correcting codes share the same underlying structure: both use constraints to identify a specific subspace of the ful...
Quantum remote control, also known as quantum remote implementation of an operator (QRIO), enables the remote manipulation of an arbitrary quantum sta...
Insider Brief A Louisiana State University-led team of researchers have demonstrated what they describe as a new class of room-temperature quantum mat...
Insider Brief PRESS RELEASE — Mind Success, a startup focused on predictive modeling for quantum technologies, has launched two software platforms aim...
Scalable quantum computing architectures increasingly rely on multi-core designs, where qubits are distributed across multiple processing cores interc...
Based on a photonic computing platform, we experimentally validate a generalized variational quantum linear solver (VQLS) by systematically solving fo...
Hybrid continuous-discrete-variable quantum processors can represent bosonic degrees of freedom directly in oscillator modes, or qumodes, while using ...
Schrödinger cat states provide a hardware-efficient platform for bosonic quantum error correction by encoding logical information in protected manifol...
Italian hardware developer Planckian has signed a strategic development agreement with Los Angeles-based startup Quantum Elements. The partnership wil...
Quantum phase transitions provide a controlled route for generating many-body excitations, but the dynamics after the critical point can be as importa...
Scalable quantum computing is limited by the dense network of electrical interconnects linking cryogenic quantum processors to room-temperature contro...
The Elliptic Curve Discrete Logarithm Problem (ECDLP) is a fundamental problem in cryptography, and reducing the resource requirements of quantum algo...
We present a framework for foliating any Pauli-based quantum error-correcting code over prime-dimensional qudits. For any such code, we obtain a qudit...
Levitating electron qubit on the surface of solid neon has recently emerged as a promising and intrinsically noise-resilient platform for quantum info...
Quantum sensing estimates a physical parameter encoded in the state of a probe; with independent spin probes the precision follows the standard quantu...
Quantum algorithms solve certain computational problems faster than the best known classical algorithms. Many algorithms, including Shor's for factori...
Rotational irrigation scheduling in water-scarce Central Asia is a densely coupled combinatorial problem: soil-moisture memory links each irrigation d...
Hybrid quantum-classical application performance is increasingly limited by classical control, host-to-QPU communication, and scheduling rather than q...
Large ion crystals in diverse geometries are a key resource for quantum simulation experiments. In this work, we introduce a macroscopic rf trap that ...
Quantum networking software provider Aliro Technologies and Austrian quantum scale-up zerothird have announced a joint quantum-safe networking deploym...
Efficient communication between distant qubits is one of the central challenges in scaling quantum processors. Although engineered spin chain protocol...
Photonic quantum computing company Xanadu (NASDAQ/TSX: XNDU) and Lockheed Martin (NYSE: LMT) have expanded their partnership to scale quantum training...
Parameterized quantum circuits~(PQCs) constitute a central building block of variational quantum algorithms~(VQAs) and quantum machine learning~(QML) ...
Neutral-atom quantum processors are rapidly scaling toward system sizes of more than ten thousand qubits, allowing for the realization of a new class ...
A central model in quantum machine learning is the quantum neural network (QNN), whose design requires balancing expressivity and trainability. Techni...
Logical entangling gates are a major source of physical spacetime overhead in fault-tolerant quantum computation. Phantom codes reduce this cost by im...
Quantum key distribution (QKD) promises information-theoretically secure communication, but future networks must bridge fiber and free-space links tha...
This article explores the potential of Quantum Machine Learning (QML), specifically assessing a Quantum Support Vector Machine (QSVM) and a Variationa...
We present a variational quantum framework for finite-horizon quantum control based on hardware-efficient ansätze. The objective is to steer a quantum...
Photonic quantum hardware developer QuiX Quantum has announced the commercial launch and physical delivery of Carina, a universal photonic quantum com...
Quantum circuit optimization for fault-tolerant computing requires exact functional equivalence while minimizing expensive non-Clifford resources such...
Quantum PDE solvers are difficult to evaluate in practice because published studies use different discretizations, output models, reconstruction rules...
Insider Brief Press release – Xanadu Quantum Technologies Limited (“Xanadu”; NASDAQ/TSX: XNDU), a leading photonic quantum computing company, and Lock...
Insider Brief Press release – Quantum Elements, a provider of AI-powered digital twins for quantum computing developers, today announced a development...
Insider Brief PRESS RELEASE — QuiX Quantum today announced Carina, the world’s first universal photonic quantum computing architecture designed for de...
Physics-informed neural networks (PINNs) provide a pathway to reunify the simulation and control of quantum systems, in which these two tasks are typi...
Large-scale Greenberger-Horne-Zeilinger~(GHZ) state is useful for quantum technologies but difficult to be prepared. Here, we propose fast measurement...
Insider Brief Press release – On July 9, 2026, Logical Qubit Technology Co., Ltd hosted its Quantum Day 2026 event, officially unveiling its supercond...
Insider Brief Press release – Studying an object with zero dimensions takes serious creativity. Consider the singularity — a point packed with infinit...
Quantum hardware developer Nord Quantique has detailed an error-mitigation methodology that curtails State Preparation and Measurement (SPAM) error ra...
We investigate the resilience to noise of single-qubit quantum key distribution (QKD) protocols in the scenario of security against independent eavesd...
Silicon spin qubits are a leading candidate for large-scale quantum computing owing to their compatibility with semiconductor manufacturing. However, ...
We investigate multiparameter quantum estimation in a Raman-coupled two-qubit system at thermal equilibrium. Analytical expressions for the quantum Fi...
Insider Brief Press release – Last two days marked the official kick-off of Q-PLANET (Quantum Pilot Line for production of Advanced chips for Neutral ...
Measurement incompatibility can remain intact at the operator level yet become operationally inaccessible when observations are restricted to the outp...
Quantum computing has advanced rapidly in recent decades, driven by developments across the technology stack, including quantum error-correcting codes...
Reliable qubit readout is a critical bottleneck toward fault-tolerant quantum computing (FTQC). In superconducting quantum processors, readout operati...
Despite rapid progress in quantum optimization, broad real-hardware benchmarks comparing multiple algorithmic families across diverse combinatorial pr...
While a minimal Kitaev chain is promised to host unprotected Majorana zero modes, its role for spin qubits is relatively underappreciated. Following r...
Gate-based digital quantum simulations offer an exciting new paradigm for studying the many-body physics of strongly correlated systems. In this conte...
Neutral Atom Quantum Computing (NAQC) is an emerging modality for scalable quantum computation, valued for its long coherence times and the naturally ...
We investigate the use of variational quantum algorithms to prepare and characterize fractional quantum Hall states on near-term quantum processors. F...
Distributed quantum computation needs to move logical qubits across lossy optical links, yet this transmission layer is usually designed separately fr...
The European Union's Chips Joint Undertaking (Chips JU) has launched Q-PLANET, a €50 million ($57.2 million USD) European Quantum Chip Stability Pilot...
Nature Physics, Published online: 13 July 2026; doi:10.1038/s41567-026-03315-2 Quantum error correction typically encodes one logical qubit across man...
Guest Post by Yonathan Cohen, Co-Founder and Chief Technology Officer of Quantum Machines. Something is changing in the quantum industry. Not long ago...
Researchers at ETH Zurich have engineered a hardware architecture for quantum computers that separates processing from working memory by utilizing mec...
International research networks and academic sponsors have opened competitive application windows targeting immediate software optimizations for early...
Schematic rendering of EeroQ’s Wonder Lake chip stack. Quantum hardware developer EeroQ has published peer-reviewed experimental results demonstrating...
Overview of RL control. Google Quantum AI has introduced a hardware-control framework that unifies real-time calibration with active quantum error cor...
Quantum design-automation developer QC Design has published a comprehensive theoretical framework and software specification detailing its flagship ar...
Reinforcement learning uses error information to adjust control algorithms.
Insider Brief Most quantum computing discussions start with superconducting chips in dilution refrigerators, or ion traps in vacuum chambers the size ...
Post-quantum semiconductor developer SEALSQ Corp (NASDAQ: LAES) has signed a $5 million commercial agreement with French silicon-based quantum hardwar...
Global quantum-safe engineering firm BTQ Technologies Corp. (Nasdaq: BTQ) has finalized the technical design phase for its next-generation hybrid secu...
Insider Brief Press release – QuTech, in collaboration with the Delft quantum technology ecosystem, has released Tuna-17: a new open-architecture supe...
Deep-tech hardware developer Shanghai Quantum Sensing Intelligence Technology Co., Ltd. has completed an angel round of financing, securing tens of mi...
Quantum research center QuTech—a joint collaboration between the Delft University of Technology (TU Delft) and the Netherlands Organisation for Applie...
Publicly traded photonic quantum computing frontrunner Xanadu Quantum Technologies Limited (NASDAQ/TSX: XNDU) has announced a major geographic expansi...
Quantum key distribution (QKD) brings the promise of communication with information-theoretic security but is limited in practice due to its susceptib...
The identification of molecules that combine long spin coherence times and efficient spin-optical interfaces, ideally at room temperature, is pivotal ...
Quantum state purification aims to recover higher-fidelity quantum states from multiple noisy copies and is a fundamental primitive for quantum inform...
Overview of the operation and calibration of an 8-dot device. Quantum engineering pioneer Diraq has announced a validation milestone in silicon-based ...
Insider Brief Press release – Xanadu Quantum Technologies Limited (“Xanadu”; NASDAQ/TSX: XNDU), a leading photonic quantum computing company, today an...
The Quantum Scientific Computing Open User Testbed (QSCOUT) has developed a qubit-boson gate set for hybrid continuous-discrete variable (CV-DV) quant...
Grokking, the delayed transition from memorization to generalization, is a fundamental phenomenon in gradient-based learning, yet its dynamics within ...
The nuclear shell model is a general way of expressing the many-body nuclear Hamiltonian and deciphering the underlying nuclear structure. In today's ...
Designing fault-tolerant quantum circuits that are both algorithmically correct and hardware compatible remains a major bottleneck in the transition t...
Accurately controlling entangling gates remains a major challenge for quantum technology applications with solid-state spin qubits. Here, we study a g...
The performance of variational quantum algorithms depends in general on the structure of the parametrized quantum circuit, but the most common ansätze...
We consider a multiplexed quantum repeater that distributes entanglement between two end nodes. Multiplexing is achieved through optical integration o...
The LUMI AI Factory, coordinated by CSC – IT Center for Science, has selected hardware manufacturer IQM Quantum Computers (Nasdaq: IQMX) to deliver an...
Quantum computers, devices that store and process information leveraging the principles of quantum mechanics, have been found to be promising for tack...
The Quantum Control Processor (QCP) bridges the gap between compiler toolchains and control electronics, and is responsible for translating compiled q...
Nonlinear dynamics is ubiquitous in nature, ranging from chemical pattern formation to ocean circulation, yet its simulation on quantum computers is f...
Achieving a genuine quantum advantage relies on two distinct non-classical resources that restrict efficient classical simulation: entanglement and ma...
Insider Brief PRESS RELEASE — Fraunhofer ILT in Aachen has developed a highly complex laser-optical system for a quantum computer currently under cons...
Insider Brief Press release – Photonic Inc., a global leader in distributed quantum computing, today announced the appointments of Orlagh Neary as Chi...
Hole spin qubits in undoped Ge/SiGe quantum well structures have advanced rapidly in performance and scalability. However, stringent multi-layer patte...
Parameterized quantum circuits (PQCs) are increasingly used as policies and value functions in quantum reinforcement learning, yet it remains unclear ...
Author(s): Wolf-Rüdiger Hannes and Guido Burkard A universal scheme for accumulating entanglement between long-lived nuclear memory qudits via repeate...
Generating images directly from quantum systems is an attractive but unresolved goal on NISQ hardware. Existing quantum generators face several couple...
Light polarization is a primary degree of freedom for encoding quantum information. The scaling up of photonic quantum networks and computer architect...
Tile codes are a family of planar quantum low-density parity-check (qLDPC) codes with weight-6 stabilizers and open boundary conditions, offering an e...
Chiral quantum emitters interact with light only in one propagation direction, allowing them to be linked into cascaded systems in which photons media...
Present-day quantum computing is cloud-based, where a user submits a circuit to a service provider's proprietary backend hardware. While providers may...
Transversal logical gates provide a direct route to fault-tolerant quantum computation, but the Eastin-Knill theorem forbids a universal transversal g...
We introduce a superconducting digital-to-analog converter (DAC) that filters control noise, provides native multiplexing, performs quantum gates in n...
Insider Brief Press release – IQM Quantum Computers (Nasdaq: IQMX) (“IQM”, “IQM Quantum Computers” or the “Company”), a global leader in full-stack su...
Insider Brief Press release – EigenQ, Inc. today announced new platform capabilities designed to help organizations prepare deployed Intel Xeon proces...
The Bloch sphere is an elegant tool for representing single-qubit states. However, a widely accepted generalization for multi-qubit systems with entan...
The contraction coefficient of the trace distance is a central tool in quantum information, quantifying how strongly a quantum channel degrades the di...
Virtual distillation is a promising error-mitigation technique that exploits multiple copies of a noisy quantum state to estimate observables as if me...
Photonic cluster states are a key resource for photonic quantum information processing. So far, deterministic generation of these states has been limi...
Quantum Architecture Search (QAS) automates the design of parameterized quantum circuits for variational quantum algorithms, yet existing benchmarks o...
Finite quantum environments can relax local probes without acting as canonical baths. We study this distinction for a probe qubit coupled to a program...
Bound states in the continuum (BICs) are counterintuitive localized states that lie within the continuum of extended states. While extensively realize...
Quantum gate teleportation enables distant parties to implement nonlocal quantum operations without physically transferring the participating qubits, ...
Quantum networks can exhibit nonclassical correlations that cannot be explained by classical models with independent sources. While the role of entang...
A research collaboration led by the Lawrence Berkeley National Laboratory (LBNL) has successfully simulated hadronization—the fundamental particle phy...
Insider Brief Press release – IQM Quantum Computers (Nasdaq: IQMX) (“IQM”, “IQM Quantum Computers” or the “Company”), a global leader in full-stack su...
Industrial neutral-atom quantum hardware manufacturer Pasqal, acting through its newly integrated Canadian subsidiary Aeponyx, has announced the creat...
We study stabilizer state testing and learning with limited coherent quantum memory. Here an algorithm sequentially receives copies of an unknown $n$-...
Insider Brief Press release – Four members of the Institute for Optical Science (IOS) and the Department of Physics at The Ohio State University are p...
Quantum Error Recovery (QER) uses knowledge of the error channel acting on a quantum system to find optimal recovery maps. The scheme restores the unc...
Three-dimensional superconducting radio-frequency (SRF) cavities provide exceptionally long-lived electromagnetic modes and, when coupled to nonlinear...
Quantum networks require qubits that combine efficient optical access, coherent control, and long-lived quantum memory, but realizing all three in one...
We prove that any generalized extended code is monomially equivalent to the Hermitian dual of a code which is closely related to a second kind of exte...
Insider Brief Press release – Qolab Inc., a leader in quantum computing hardware, today announced the initial closings of its Series B Preferred Stock...
Quantum convolutional neural networks (QCNNs) have become increasingly popular in quantum machine learning (QML) due to their efficient parameterizati...
Insider Brief Press release – Pasqal, through its Canadian subsidiary Aeponyx, today announced the creation of a specialized center of competency focu...
Achieving high-precision quantum computation requires effective suppression of idling errors that occur when qubits remain inactive during waiting per...
The aging transition is a critical phenomenon in which collective dynamics deteriorate as the fraction of inactive quantum nodes exceeds a threshold, ...
In the NISQ era, there is a need for resource-efficient proof-of-principle experiments that can be built up to genuine utility. Single-qubit classifie...
Long-lived logical qubits are essential for fault-tolerant quantum computation. However, the practical performance of traditional error correction pro...
Block encodings are a central primitive in quantum algorithms, but standard constructions typically require logarithmic ancilla overhead and complicat...
We study the compilation of structured quantum gate families on two-dimensional neutral-atom arrays, aiming to reduce addressing and transport overhea...
The transverse-field Ising model has attracted a lot of attention in recent years, especially in the quantum simulation and quantum computation litera...
Portfolio diversification - a cornerstone of modern investment management - can be formulated as a Maximum Independent Set (MIS) problem on asset corr...
Realizing quantum neural networks (QNNs) in industry requires knowing which quantum computing paradigm suits which task. Motivated by AI accelerators ...
We give an analytical expression for the dynamical Lie algebra corresponding to the QAOA-MaxCut problem on complete graphs, and show that the variance...
Quantum nonlocality paradoxes, such as that of GHZ, provide maximally sharp logical obstructions to classical probabilistic models of quantum correlat...
Geometric Machine Learning (GML) successes have been achieved through the thorough study and design of new equivariant neural networks. In comparison,...
Qubit leakage is a noticeable source of errors for quantum computing. In quantum processors, leakage excitations traveling between qubits generate cor...
Superconducting quantum chips commonly utilize quarter-wavelength (λ/4) transmission line resonators as readout circuits. An analytical model for the ...
Multi-core quantum computing architectures have emerged as a promising solution to the qubit scalability limitations of monolithic NISQ devices. Quant...
By remotely accessing an IBM quantum computer, a research scientist at Lawrence Berkeley National Laboratory has successfully simulated a key process ...
Silicon spin qubits are promising for large-scale quantum-computer integration because they can fully leverage the well-developed semiconductor infras...
Entanglement distributed over a set of individually addressable qubit nodes is the enabling resource for a plethora of applications ranging from tests...
We present a quantum-information-theoretic study of three-flavor neutrino oscillations in long-baseline experiments by mapping flavor states to qubit-...
Standard quantum verification and certification protocols often assume that experimental sources emit independent and identically distributed (i.i.d.)...
Quantum sensors that harness quantum coherence and entanglement are emerging as powerful tools in many fields, including particle physics, promising u...
We investigate the generation of uniform quantum state ensembles via continuous measurement. Using the $SU(d)$ Bloch representation, we derive the ass...
Neutral atom quantum computing offers strong scalability and flexible qubit connectivity, but most existing compilation flows rely on reconfigurable a...
The gate and qubit requirements of quantum computations of electronic structure have been extensively studied. However, the quantum resources present ...
Insider Brief PRESS RELEASE — QuiX Quantum today released its vision of universal photonic quantum computing with logical qubits through Dedalo, the c...
We introduce a unified, computable measure of multipartite entanglement based on the spectral properties of an entanglement graph and its associated e...
In both classical and quantum error correction, heralded erasures are known to be easier to tolerate than unheralded general stochastic errors. Whilst...
Superconducting qubits are a leading platform for quantum computing. However, simultaneously achieving low noise sensitivity to suppress decoherence a...
We study Bell-mixing lines $ρ_λ=λΦ^+ +(1-λ)σ$, where $Φ^+$ is a fixed Bell reference and $σ$ is a separable two-qubit noise state. Along this line the...
Telecommunications giant China Telecom Quantum Group has officially brought the Tianyan-P2000 photonic quantum computer into formal production operati...
A quantum circuit demonstrating the structure of a singular spacetime Pauli check. The ancilla is represented by the purple qubit/top wire, and four t...
The Presidency of the Republic of Türkiye, Secretariat of Defence Industries (SSB) has officially unveiled the SSB Quantum Program, establishing a com...
Non-Clifford gates are a necessary resource for universal quantum computation, yet their fault-tolerant implementation typically relies on magic-state...
Readout errors are one of the dominant sources of noise in current quantum processors, limiting both expectation-value estimation and sampling-based a...
Remarkable technical progress has made high-rate, high-distance, quantum low-density parity-check codes (QLDPC) promising candidates for scalable quan...
Measurement-based quantum computing is a universal model of quantum computation in which successive product measurements of an entangled resource stat...
Over the past decades, the operations research community has developed numerous effective optimization algorithms, yet quantum computing is emerging a...
Fault-tolerant quantum computing requires architectures that simultaneously address scalability, connectivity, and error correction under realistic no...
We propose a framework for the direct generation of flying cat-qubit states from vacuum using time-dependent two-photon drives in nonlinear bosonic sy...
Insider Brief Future quantum networks will depend on reliable handshakes between two very different carriers of quantum information: solid-state qubit...
The ability of bosonic energy quanta to bunch together in an energy-conserving interaction is a fundamental feature of quantum harmonic oscillators. L...
Universal blind quantum computation (UBQC) hides a client's computation by using a computation-independent BFK09 brickwork graph and encoding the comp...
Photonic quantum processing unit for quantum and classical machine learning tasks. A collaborative research group consisting of quantum information sc...
Photonic quantum computing developer Quandela and Qatar-based technology conglomerate Mekdam Holding Group (QSE: MKDM) have signed a comprehensive Mem...
Bosonic hardware developer Alice & Bob has published a computer architecture blueprint authored by senior architect Kevin D. Kissell detailing a new "...
Early detection of oral cancer markedly improves clinical outcomes, yet specialized diagnostic tools remain scarce in low-resource settings. Smartphon...
Parameterized Instantaneous Quantum Polynomial (IQP) circuits have proven useful in quantum generative learning models, particularly for binary distri...
We extend Noise-Directed Adaptive Remapping (NDAR), a recently proposed heuristic meta-algorithm that leverages device noise as a computational resour...
Variational excited-state quantum algorithms fail for reasons usually studied in isolation: barren plateaus, symmetry contamination, finite-sampling i...
We investigate extractable work storage in a capacitively coupled double quantum dot (DQD) quantum battery (QB) subjected to experimentally motivated ...
Hamiltonian dynamics have been widely implemented on noisy intermediate-scale quantum devices in recent years. In contrast, experimental demonstration...
Dynamic Time Warping (DTW) is a cornerstone for time series classification, but its reliance on Euclidean distances fails to capture latent cross-chan...
Insider Brief PRESS RELEASE — A Yale-led project — aided by a national community of researchers — has reached the next step in its effort to develop t...
Hybrid photonic quantum computers, combining stationary matter qubits and flying photonic qubits, offer an intrinsically networked and resource-effici...
Generative models have achieved remarkable success in data synthesis, though recent advances driven by increasing model scale have introduced challeng...
Achieving high-fidelity execution on noisy intermediate-scale quantum (NISQ) hardware requires careful selection of physical qubit layouts, as gate er...
We introduce a surface-code cultivation protocol for reusable logical catalyst states that implement exact fine dyadic phase gates $Z^{2^{-b}}$ by pha...
In this paper, we introduce a novel two-way quantum key distribution (QKD) protocol in which the sender (Alice) and receiver (Bob) employ one qubit of...
Trapped-ion systems have emerged as a leading platform for scalable quantum information processing owing to their high-fidelity operations and long-ra...
We propose a quantum computer architecture based on ions confined in optical tweezer arrays, combining the long coherence times of trapped-ion qubits ...
Quantum information science aims to harness different kinds of quantum resources to accomplish specific information-processing tasks. These resources ...
Superconducting transmon processors represent a leading platform for large-scale quantum computing due to their high gate fidelities and scalability. ...
Photonic integrated circuits offer a scalable and robust route toward quantum information technologies by consolidating photon sources and linear opti...
Graphs provide a natural language for relational data in chemistry, biology and optimisation. Graph neural networks (GNNs) have driven much of the rec...
Holonomic quantum computation offers a promising route to robust quantum gates, but decoherence remains a central obstacle in realistic implementation...
We propose an array of the Ramsey-type interferometers using $N$ superposition states, $(|0\rangle+ |1\rangle)^{\otimes N}$, as a sensor to detect wav...
QuEra Computing Inc. has released its updated product roadmap during a strategic webinar briefing, detailing the transition timelines from Noisy Inter...
Cavity-assisted photon scattering (CAPS) is a powerful mechanism for realizing strong interactions between the internal states of stationary qubits an...
Overview of transversal STAR architecture. QuEra Computing and Los Alamos National Laboratory have introduced a co-designed quantum computing architec...
Semiconductor manufacturer STMicroelectronics has introduced the ST54M, a single-die secure mobile processor equipped with a hardware accelerator for ...
Classiq and technology company TEA TEK Group have announced a strategic partnership to establish a quantum computing hub in Naples, Italy. The facilit...
We investigate the algebraic structure underlying the Lindblad equation for finite-dimensional open quantum systems. By introducing a suitable operato...
Non-local quantum computation (NLQC) studies how two collaborating players can implement channels on distributed systems using a single simultaneous r...
Device-independent quantum key distribution (DI-QKD) offers security with the smallest possible set of assumptions about the experimental setup. The c...
Autoencoders transformed classical machine learning by solving the curse of dimensionality, enabling principled weight initialization and learning com...
Spatial light modulators (SLMs) have emerged as reconfigurable platforms for photonic quantum information processing, offering software-defined contro...
Realizing coherent quantum computation requires precise and robust manipulation of quantum systems through quantum control protocols. Most quantum con...
From cosmology to quantum matter, metastable states often decay through the nucleation and growth of competing domains, with false vacuum decay provid...
Useful quantum algorithms require many coupled discrete design choices. We study LLM-driven evolutionary program synthesis -- a language model edits a...
Insider Brief PRESS RELEASE — Bull, a leader in advanced computing and AI, and Alice & Bob, a leader in fault-tolerant quantum computing specialising ...
We present the analytical generators for arbitrary multi-qubit controlled gates. Closed forms for the generating Hamiltonians are given for gates with...
Insider Brief PRESS RELEASE — QuantWare, the industrial quantum processor company, and Maybell Quantum, today announced a partnership to ensure Maybel...
The cavity-magnon-qubit system has recently been demonstrated as a new platform for preparing macroscopic quantum states in magnonic systems. Here, we...
The Eclipse Qrisp developer community has integrated Eclipse Qrisp with the NVIDIA CUDA-Q platform for hybrid quantum-classical computing. Originally ...
Traditional cloud-style QPU access. Each iteration traverses cloud APIs, queues and schedulers before reaching the QPU. French photonic quantum comput...
Quantum low-density parity-check (qLDPC) codes are promising candidates for realizing large-scale fault-tolerant quantum computing. Although many code...
UK-based photonic quantum computing company Aegiq has unveiled a series of technical milestones that integrate artificial intelligence and tensor netw...
Quantum communication between two distant parties will serve as a cornerstone of the future quantum internet. However, generating enough entangled Bel...
Multi-qubit systems are essential for scalable quantum technologies, but their performance is often limited by decoherence from qubit--qubit interacti...
UK-based photonic quantum computing developer Aegiq has opened its new corporate headquarters in Sheffield, establishing a localized center of excelle...
UK-based photonic quantum computing company Aegiq has secured a series of international research partnerships and industrial defense collaborations de...
Measuring part of a quantum system in the midst of its evolution and acting on the result in real time is essential for numerous quantum information p...
The fundamental position and momentum operators of quantum mechanics are unbounded, but finite rank compressions of the operators can be considered to...
To scale superconducting quantum processors, it is essential to achieve long coherence times while engineering interactions that do not introduce addi...
The realization of a scalable quantum internet relies on the ability to temporally align asynchronous photonic signals through on-demand buffering. Wh...
Finite-time control is central to quantum technologies, yet rigorous limits on reachable targets and optimal control times remain largely unknown. We ...
Insider Brief PRESS RELEASE — IQM Quantum Computers, the global leader in superconducting quantum computers, today announced a significant achievement...
Insider Brief PRESS RELEASE — Quantum Computing Inc. (“QCi” or the “Company”) (Nasdaq: QUBT), an innovative, quantum optics and integrated photonics t...
In quantum communication and fusion-based quantum computation, photonic Bell measurements are fundamentally limited when only passive linear optics is...
A profound understanding of decoherence and dissipation in quantum dynamics is crucial for the realistic modeling of the evolution of quantum systems....
Fault-tolerant quantum error correction requires repeated syndrome extraction to address errors induced by the syndrome-extraction circuit itself. How...
Insider Brief PRESS RELEASE — Quandela today announced that it has experimentally validated a low-latency integration path between photonic quantum pr...
We introduce a phase-space measure of quantum synchronization that quantifies relative phase localization for two-qubit and three-qubit systems. This ...
Guest Post by Matt Todd and Bryce Bailey Quantum computing has long been discussed as a distant technical ambition. However, recent developments sugge...
Exceptional points (EPs) are non-Hermitian spectral singularities exhibiting fractional-power responses, yet their implications for multipartite entan...
We propose gate-defined spin qubits in electrostatically confined altermagnetic quantum dots. Elliptical confinement of the $d$-wave altermagnetic str...
We present an efficient protocol for learning an unknown $k$-local Lindblad generator on $n$ qubits using only product-state preparations, short-time ...
We provide a pre-obfuscation circuit-level implementation of an efficient one shot signature scheme, which has known applications to delegated signatu...
Quantum machine learning methods are increasingly explored for modeling complex environmental systems, including groundwater heat plume dynamics. In t...
Insider Brief PRESS RELEASE — Hewlett Packard Enterprise has named IQM Quantum Computers among the companies collaborating on its hybrid classical-qua...
We consider a general and practical scenario of quantum key distribution (QKD) over an unknown, stationary, unital qubit channel. Furthermore, due to ...
BB84 quantum key distribution derives its security from a physical guarantee that any eavesdropper disturbs the channel in a statistically detectable ...
Drawing on advances in superconducting qubit control schemes that unlock enriched native gate sets at the hardware level, we systematically examine ho...
The Learning With Errors (LWE) problem constitutes the mathematical foundation of modern Post-Quantum Cryptography (PQC). Cryptanalysis of LWE ranges ...
We show that incoherently pumped qubits can realize a cascaded dissipative mechanism for stabilizing Wigner-negative magnon steady states. The mechani...
Reading out a qubit often requires coupling it to a resonator, but that same resonator can also give the qubit an extra path to decay. Here, we study ...
Guest post by Zeynep Koruturk, Dr. Kris Naudts, & Donald Harmitt of Firgun Ventures and Professor Bob Coecke of Relational Intelligence Limited Few qu...
Quantum platforms with beyond-planar connectivity provide new opportunities for fault-tolerant quantum computation (FTQC). While quantum low-density p...
Independent researchers from the IBM Quantum Network have published two separate technical studies validating real-world applications on the IBM Night...
Researchers from the Duke Quantum Center and IonQ have demonstrated the distributed generation of a Greenberger–Horne–Zeilinger (GHZ) state across a t...
Discovery could help in the development of on-chip quantum information technologies that can be scaled down to the nanoscale The post New class of mag...
Illustration of the Helios design and conception of operations. Sandia National Laboratories and Quantinuum have published peer-reviewed performance d...
We study the problem of learning local Lindbladians from black-box access to the physical evolution, and the goal is to estimate all Hamiltonian and d...
Neutral atom quantum computers (NAQC) are emerging as a promising, scalable quantum computing platform because of their long qubit coherence, flexible...
As quantum-computing platforms are susceptible to noise, the fidelity of quantum operations is limited by decoherence. Understanding this limitation i...
The pursuit of quantum advantage is driving the co-evolution of quantum processors and classical simulation methods. Despite advances in scale and qua...
Quantum entanglement is a central resource underpinning emerging quantum technologies, enabling capabilities beyond those of classical systems. Accura...
High-harmonic generation (HHG) is governed by interference between electron trajectories. We propose that the dominant short and long trajectories def...
Machine learning models have scaled to unprecedented sizes, making training across distributed devices the de facto standard in the field. In this wor...
The surface code is a promising route towards large-scale quantum computing, requiring only nearest-neighbour gates amenable to superconducting hardwa...
Estimating nonlinear properties of quantum states is a central task in quantum information science. Multivariate traces, $\mathrm{tr}(ρ_1 \cdots ρ_K)$...
Quantum spin glasses are often considered testbeds for studying quantum optimization algorithms and as such have been the subject of various quantum a...
An efficient implementation of quantum algorithms is often hindered by the lack of efficient primitives for operators and state preparation. This limi...
We present the Grover adaptive search self-consistent field (GAS-SCF) algorithm. GAS-SCF leverages quantum arithmetic to construct an efficient oracle...
We report the first results of the magnetic dipole hyperfine structure (HFS) constants of neutral $\mathrm{Li}$, Li-like $\mathrm{Be}$, neutral $\math...
Mirror randomized benchmarking (MRB) is an established technique that provides a global error metric at the scale of a whole QPU. To expand upon this ...
Continued advancements in quantum computing have stimulated growing interest in translating quantum technologies into real-world applications. Consequ...