89 curated articles
Quantum hardware developer Nord Quantique has detailed an error-mitigation methodology that curtails State Preparation and Measurement (SPAM) error rates within single-mode bosonic grid-state qubits. Published as a preprint on arXiv ("Quantum error correction of a grid-state qubit with state prepara...
Silicon spin qubits are a leading candidate for large-scale quantum computing owing to their compatibility with semiconductor manufacturing. However, ...
Which properties of a quantum many-body system are operationally accessible is a central question underlying spectroscopy, thermodynamics, and quantum...
We investigate multiparameter quantum estimation in a Raman-coupled two-qubit system at thermal equilibrium. Analytical expressions for the quantum Fi...
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...
Gate-based digital quantum simulations offer an exciting new paradigm for studying the many-body physics of strongly correlated systems. In this conte...
Weak values (WVs) arise from weak measurements performed within a time-symmetric formulation of quantum mechanics, where a system is both pre- and pos...
We demonstrate the feasibility of entanglement-based quantum key distribution (eQKD) in high-security financial infrastructure over a 22 km fiber link...
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...
Deep-tech hardware developer Shanghai Quantum Sensing Intelligence Technology Co., Ltd. has completed an angel round of financing, securing tens of mi...
Quantum key distribution (QKD) brings the promise of communication with information-theoretic security but is limited in practice due to its susceptib...
The scalability of neutral atom quantum computing demands integrated electronic control systems with low latency, modular architecture, and real-time ...
Insider Brief A Shanghai quantum sensing startup has raised an angel funding round worth tens of millions of yuan — or millions of dollars U.S. — as i...
The negatively charged boron vacancy center in hexagonal boron nitride is a premier candidate for quantum sensing, yet its performance is critically l...
The U.S. National Science Foundation (NSF) has launched Project Triad, a multi-tiered federal initiative designed to combine quantum sensing, quantum ...
The Quantum Control Processor (QCP) bridges the gap between compiler toolchains and control electronics, and is responsible for translating compiled q...
This short report explores the (non exhaustive) current state of quantum technologies, their potential applications, and the challenges that must be a...
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 — The U.S. National Science Foundation today announced Project Triad, a first-of-its-kind initiative to integrate quantum ...
Hole spin qubits in undoped Ge/SiGe quantum well structures have advanced rapidly in performance and scalability. However, stringent multi-layer patte...
Real-time decoding is a major bottleneck in scaling quantum error correction (QEC) from noisy intermediate-scale quantum (NISQ) devices to fault-toler...
Circular states in Rydberg atoms offer a promising platform for quantum computation, quantum simulation and quantum sensing. However, the final step o...
Virtual distillation is a promising error-mitigation technique that exploits multiple copies of a noisy quantum state to estimate observables as if me...
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...
Quantum conference key agreement (QCKA) enables multiple users to establish a common secret key with information-theoretic security and is regarded as...
IBM Quantum System Two in Poughkeepsie, New York. The machine was used in the experiments conducted by University of Sydney quantum physicists. Photo:...
Deep-tech startup xDots has unveiled its quantum-based industrial hardware infrastructure stack at Quantum Korea 2026, held at the Dongdaemun Design P...
Insider Brief Press release – The Ohio State University is strengthening its growing prominence in quantum science, technology, and education with a $...
Insider Brief Press release – XDots (xDots), a company specializing in quantum technology-based energy optimization solutions, participated in Quantum...
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 $n$-...
Quantum-enhanced metrology relies on entanglement to achieve sensitivities beyond the standard quantum limit. While remarkable progress has been made ...
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, ...
The security of practical quantum key distribution (QKD) systems is fundamentally constrained by vulnerabilities of single-photon detectors. Measureme...
Portfolio diversification - a cornerstone of modern investment management - can be formulated as a Maximum Independent Set (MIS) problem on asset corr...
Superconducting quantum chips commonly utilize quarter-wavelength (λ/4) transmission line resonators as readout circuits. An analytical model for the ...
We present a quantum-information-theoretic study of three-flavor neutrino oscillations in long-baseline experiments by mapping flavor states to qubit-...
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...
Quantum information scrambling, the dispersal of local information into many-body degrees of freedom, provides a powerful mechanism for generating lar...
Insider Brief Press release – Quantum X Labs Ltd. (Nasdaq: QXL) today announced the appointment of Dr. Ira Wolfson to its leadership team as a quantum...
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...
Measurement-based quantum computing is a universal model of quantum computation in which successive product measurements of an entangled resource stat...
We report on the first experimental verification of mode-independent entanglement. Commonly, the entanglement of a state is firmly based on pre-define...
The universal scaling of critical behavior in phase transitions is a cornerstone of physics. Dynamical quantum phase transitions (DQPTs) are their non...
Fault-tolerant quantum computing requires architectures that simultaneously address scalability, connectivity, and error correction under realistic no...
Decoherence is the biggest bottleneck in all quantum technologies. For nitrogen-vacancy (NV) centers in diamond, the loss of coherence is caused by th...
The ability of bosonic energy quanta to bunch together in an energy-conserving interaction is a fundamental feature of quantum harmonic oscillators. L...
Quantum computing provides a powerful paradigm for representing and transforming high-dimensional information through superposition, entanglement, and...
Universal blind quantum computation (UBQC) hides a client's computation by using a computation-independent BFK09 brickwork graph and encoding the comp...
Insider Brief Türkiye has set out a detailed plan for entering the global quantum race, publishing a national roadmap that names 85 specific technolog...
Variational excited-state quantum algorithms fail for reasons usually studied in isolation: barren plateaus, symmetry contamination, finite-sampling i...
We present a phenomenological study of quantum correlations in the decay of $B^0$ mesons into a system of two vector mesons. The decay of the $B^0$ me...
Cavity optomechanical systems have emerged as a promising platform for quantum sensing. Quantum mechanics imposes a standard quantum limit (SQL) on th...
Quantum light detection and ranging (LiDAR) utilizes quantum entanglement and correlation to improve precision, noise resilience and covertness of tar...
Dynamic Time Warping (DTW) is a cornerstone for time series classification, but its reliance on Euclidean distances fails to capture latent cross-chan...
Modern quantum physics now enables control of quantum systems at the level of individual trajectories, opening a new frontier that links quantum infor...
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...
SPRIND (the German Federal Agency for Breakthrough Innovations) has launched the Quantum Sensing Initiative, a long-term strategic framework to accele...
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...
States with negative Wigner functions form a fundamental class of nonclassical resource underlying quantum advantage. Here we develop a unified framew...
High-dimensional spatially entangled two-photon state generated by spontaneous parametric down-conversion process (SPDC) has become a promising resour...
The cavity-magnon-qubit system has recently been demonstrated as a new platform for preparing macroscopic quantum states in magnonic systems. Here, we...
End-to-end QPE circuit with our custom MPS-to-circuit compiler to address state preparation. Silicon spin hardware developer Quantum Motion and comput...
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...
Insider Brief PRESS RELEASE — Qubic, a quantum technology company developing low-noise cryogenic amplifiers solving one of the major bottlenecks for s...
In quantum communication and fusion-based quantum computation, photonic Bell measurements are fundamentally limited when only passive linear optics is...
Fault-tolerant quantum error correction requires repeated syndrome extraction to address errors induced by the syndrome-extraction circuit itself. How...
We present an efficient protocol for learning an unknown $k$-local Lindblad generator on $n$ qubits using only product-state preparations, short-time ...
Quantum machine learning methods are increasingly explored for modeling complex environmental systems, including groundwater heat plume dynamics. In t...
Insider Brief PRESS RELEASE — Infleqtion (NYSE: INFQ), a global leader in quantum computing and quantum sensing powered by neutral-atom technology, to...
Measurement-based continuous-variable optical quantum computing inherently offers high-speed, large-scale operations, yet its practical performance re...
We propose a measurement-like interferometric test of Continuous Spontaneous Localization (CSL), in which a trapped nanoparticle acts as a reversible ...
Quantum platforms with beyond-planar connectivity provide new opportunities for fault-tolerant quantum computation (FTQC). While quantum low-density p...
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...
We present a systematic study of von Neumann entropy estimation in multi-qutrit quantum systems using two complementary approaches: variational quantu...
As quantum-computing platforms are susceptible to noise, the fidelity of quantum operations is limited by decoherence. Understanding this limitation i...
Quantum entanglement is a central resource underpinning emerging quantum technologies, enabling capabilities beyond those of classical systems. Accura...
Estimating nonlinear properties of quantum states is a central task in quantum information science. Multivariate traces, $\mathrm{tr}(ρ_1 \cdots ρ_K)$...
We report the first results of the magnetic dipole hyperfine structure (HFS) constants of neutral $\mathrm{Li}$, Li-like $\mathrm{Be}$, neutral $\math...