132 curated articles
Characterizing large quantum systems with minimal assumptions is a central challenge in quantum information science. Self-testing provides the strongest form of certification by identifying the underlying quantum state solely from observed measurement statistics. However, existing self-testing metho...
The Majorana stellar representation translates abstract quantum spin states into intuitive geometric constellations on the Bloch sphere, revealing sym...
Nitrogen-vacancy (NV) centers in diamond are a leading platform for solid-state quantum sensing and quantum information processing. While most optical...
Speech emotion recognition (SER) remains fragile in real-world conditions because emotional cues are subtle, speaker-dependent, and easily confounded ...
Entanglement can hide in two fundamentally different ways. First, multi-copy correlations can carry information that no single-copy measurement on an ...
Insider Brief Google is investing $10 million in a new research effort aimed at applying quantum computing, quantum sensing and artificial intelligenc...
In quantum many-body dynamics, locally encoded information typically scrambles across the entire system, becoming inaccessible to local probes. The up...
Insider Brief PRESS RELEASE — Infleqtion (NYSE: INFQ), a global leader in quantum computing and quantum sensing powered by neutral-atom technology, to...
Insider Brief PRESS RELEASE — It’s a truth universally acknowledged that a robot working alongside humans is in need of a human-like skin for safer in...
The quantum enhancement of success probability in the Random Access Code (RAC) protocols remains unexplored from two important perspectives. First, th...
Insider Brief PRESS RELEASE — NVision, a leader in quantum technologies for healthcare, today announced a $55 million Series B financing round anchore...
We consider the multi-qubit fixed-excitation state transfer along the spin chain with dipole-dipole interaction subjected to the interaction with envi...
We investigate the purification dynamics of a single qubit under continuous in time monitoring. By employing a collisional model framework where the s...
Measurement-based quantum computing uses measurement patterns on predefined quantum resource states to execute quantum logic. Quantum simulation offer...
We study exact-regenerating codes for entanglement-assisted distributed storage systems. Consider an $(n,k,d,α,β_{\mathsf{q}},B)$ distributed system t...
When multiple quantum emitters couple to a common electromagnetic environment, interference in their collective radiative dynamics gives rise to super...
Quantum computation holds the promise of solving certain complex problems exponentially faster than classical computers. However, the high prevalent n...
Achieving uniform and scalable control of semiconductor spin qubits remains a key challenge for large scale quantum computing. In this work, we invest...
Quantum teleportation is a fundamental protocol in quantum information science, whose performance is conventionally evaluated under the assumption of ...
We investigate a probe state preparation protocol based on two non-selective generalized quantum measurements to enhance parameter estimation in singl...
We develop an adiabatic quantum simulation framework on gate-based quantum computers to probe topological signatures of the one-dimensional fermionic ...
The fundamentals of quantum mechanics are minuscule. Scientists constantly home in on finer resolutions to measure, quantify, and control these fundam...
Nanophotonic quantum memory is a vital component for scalable quantum information processing in quantum computing, networking, and sensing. Here we st...
While world models learn compact representations of complex environments, they lack a physics-grounded metric to assess the structural fidelity of the...
The measurement of top-quark spin correlations provides a key tool for probing its interactions with high precision. Owing to its extremely short life...
The ability to locally control and measure subsets of ancilla qubits in an efficient and crosstalk-free manner is a key ingredient in quantum error co...
Integrated photonic technologies have recently shown significant advances, enabling the possibility to implement reconfigurable interferometers with i...
Artificial intelligence and machine learning have been widely adopted both in the industry and in everyday life, but at the cost of high compute deman...
The growing computational demands of classical neural networks have intensified the search for energy-efficient and powerful computational alternative...
Whether chirality-induced spin selectivity (CISS) reflects coherent SU(2) spin rotation or incoherent spin-dependent filtering is a central unresolved...
Recent demonstrations of squeezing generation using Traveling Wave Parametric Amplifiers (TWPAs) have opened the way for the application of broadband ...
Quantum error correction (QEC) is essential for achieving low error rates required for fault-tolerant quantum computation. In stabilizer-based codes s...
Deep reinforcement learning (DRL), acting as a novel and powerful paradigm for quantum optimal control, offers transformative opportunities for advanc...
Physicists at ParityQC have established that universal measurement-based quantum computing (MBQC) is possible using single-qubit measurements restrict...
We revisit the reduction of Cheng and Wan, which transforms instances of the discrete logarithm problem (DLOG) over finite fields into a decoding prob...
Shor's algorithm is one of the most promising applications of quantum computers. However, since $\sim 10^6$ physical qubits are believed to be require...
Pauli-based computation (PBC) provides a universal framework for executing fault-tolerant quantum algorithms using Pauli measurements and magic states...
On noisy intermediate-scale quantum (NISQ) devices, expectation values of many observables are obtained through sampling-based approximations to trace...
Insider Brief PRESS RELEASE — Magnons are tiny waves in magnetisation and ideal building blocks for hybrid quantum systems and quantum metrology. Howe...
Insider Brief PRESS RELEASE — Physicists at ParityQC have demonstrated that universal quantum computation driven purely by measurements in the YZ-plan...
QuantumDiamonds GmbH, a Munich-based specialist in quantum sensing for semiconductor testing, has successfully deployed its QDm.1 system at the Integr...
The accurate estimation of observables is a crucial task in quantum computing. Recent advances have highlighted the need for (a) specialized protocols...
High-fidelity logical \emph{T}-gate realization constitutes a core prerequisite for large-scale fault-tolerant quantum computing. However, conventiona...
Despite rapid recent advances in quantum machine learning, the field is in many ways stuck. Existing approaches can exhibit serious limitations, and w...
Levitation of microscopic objects in vacuum combines exceptional environmental isolation with precise control of their dynamics, pushing the limits of...
Accurately characterizing multipartite entangled states is a critical challenge in quantum information processing. In this work, we focus on applying ...
In multi-core quantum computing architectures, waveguide-mediated interconnects are essential for facilitating fast, high-fidelity quantum state trans...
Bosonic quantum error correction encodes a logical qubit in an oscillator, avoiding the hardware overhead of large qubit arrays. Among such encodings,...
Continuous-variable quantum key distribution (CVQKD) using passive state preparation (PSP) offers low-cost, high-rate secure communication. However, t...
Orbital energy splittings are important quantum dot parameters for the operation of hole spin qubits. They are known to depend on the lateral confinem...
We propose a method to evaluate general thermodynamic fluctuations in open quantum systems, based on performing a two-point measurement scheme on the ...
Establishing the precise computational boundary between classically tractable fermionic systems and those capable of genuine quantum advantage is a ce...
Quantum state discrimination is a fundamental information processing task that serves as a building block for numerous applications and provides impli...
We present a method for generating a laser beam with flat intensity and phase profiles in the focal region where the beam interacts with neutral $^{87...
Insider Brief A new study proposes that DNA functions as a quantum computing system capable of sensing cosmic radiation and that this sensitivity may ...
Continuous-variable quantum systems are promising candidates for quantum computing and quantum information processing. It is widely known that quadrat...
Distributed Quantum Computing (DQC) and Quantum Error Correction (QEC) rely on dynamic circuits that include Mid-Circuit Measurements (MCMs) and class...
Insider Brief PRESS RELEASE — Infleqtion (NYSE: INFQ), a global leader in quantum computing and quantum sensing powered by neutral-atom technology, an...
We explore what the integrated use of quantum spatial distribution (QSD), or more specifically, superposition of both spin and position states of part...
We compare four polynomial-resource measurement strategies, (I) $Z$-basis-only, (II) nearest-neighbor $ZZ$ (NN), (III) multi-basis ($Z$, $X$, $Y$), an...
We propose a general method to fully characterize a classical stochastic noise process causing qubit dephasing through repetitive Ramsey interferometr...
In this paper, we resolve an open question in the field of optimization algorithms for training parametrized quantum circuits: Does the popular Rotoso...
Image classification is a core task of intelligent sensing, conventionally follows a sequential imaging then processing pipeline. However, redundant h...
We investigate the role of continuous measurement and postselection in the dynamics and entanglement of a transmon-cavity-transmon coupled system. In ...
Discrete time crystals are non-equilibrium phases of matter in periodically driven systems, characterized by robust subharmonic oscillations and broke...
The emergence of classicality is fundamentally driven by the interaction between a quantum system and its environment. Foundational open-system approa...
Quantum computers could solve problems beyond the reach of classical devices, but this potential depends on quantum error correction (QEC) to protect ...
We analyze device-dependent correlation sets generated by fixed local dichotomic measurements for two-qubit systems in the $(2,m,2)$ Bell scenario. We...
Phase retrievability of a quantum channel asks whether pure states can be reconstructed from suitable measurements. In this paper, we study this probl...
We study single-copy stabilizer learning, the problem of identifying a stabilizer group of dimension $n-t$ from an $n$-qubit quantum state $ρ$. We obt...
Future quantum architectures are expected to be modular, with quantum processors connecting multiple quantum processing units (QPUs) via photonic inte...
Entanglement has been proposed as a means to improve the sensitivity of sensing weak signals. While the degree of this quantum advantage is well under...
Measurement-only circuits provide a minimal setting in which repeated local projections can either generate or suppress many-body entanglement, giving...
Quantum resources such as entanglement form the backbone of quantum technologies and their efficient generation is a central objective of modern quant...
Execution of quantum algorithms on large-scale quantum computers will require extremely low logical error rates, which necessitates the development of...
High-quality photonic Bell state measurements (BSMs) enable scalable universal quantum computing and long distance quantum communication. However, whe...
The creation of high-quality cluster states in superconducting microwave circuits is a relevant ingredient in continuous-variable quantum computing. A...
Photonic quantum computing provides a promising route toward quantum computation by naturally supporting the measurement-based quantum computation (MB...
Fault-tolerant quantum computing increasingly demands rigorous, circuit-level evaluation of diverse quantum error correction (QEC) protocols and effic...
High-precision optical phase stabilization in quantum networks is fundamentally constrained by the strict photon-flux and duty-cycle limits required t...
We investigate optimized vertical ion-shuttling protocols for trapped-ion applications across a range of ion-trap experiments, including three-dimensi...
Magnetic quantum sensors based on trapped ions utilize properties of quantum mechanics which have optimized precision and beat current limits in senso...
We present pygridsynth, an open-source Python library for ancilla-free approximate Clifford+$T$ synthesis that runs in $O(\log(1/ε))$ for precision $ε...
Insider Brief PRESS RELEASE — Infleqtion (NYSE: INFQ), a global leader in quantum computing and quantum sensing powered by neutral-atom technology, an...
Quantum coherence is an important quantum resource which plays a pivotal role in the field of quantum information. Based on metric adjusted skew infor...
Insider Brief PRESS RELEASE — NPL, the UK’s National Metrology Institute (NMI), plays a central role in providing accurate and trusted measurement acr...
Wave--particle duality demonstrates the peculiar nature of quantum mechanics. In which-way experiments, depending on the measurement scheme, a particl...
Fiber-integrated micro-optical elements promise a scalable approach to photon collection and beam shaping for quantum information processing. Here, we...
Integrated photonics is widely regarded as a key enabler for scalable quantum key distribution (QKD), offering compactness, stability, and compatibili...
Microwave photon detection is a key technology for low-temperature superconducting electronics and quantum information processing. A promising possibi...
Quantum protocols require classical signaling, and when classical signals propagate faster than quantum ones, standard rate-loss limits can be surpass...
We propose a quantum-resistant quantum teleportation (QRQT) framework protected by post-quantum cryptography (PQC) to secure the classical correction ...
We investigate the generation of quantum states for precision metrology in noisy two-level systems. These states are obtained by optimizing a variatio...
The classical simulation of universal quantum circuits is crucial both fundamentally and practically for quantum computation. We propose SyQMA, a simu...
The certification of quantum systems is essential for emerging quantum technologies, particularly in quantum communication, networks, and distributed ...
Partial quantum error correction and quantum error mitigation are expected to coexist in the pre-fault-tolerant regime, yet the resource advantage of ...
Light's intrinsic carrier frequency of hundreds of terahertz theoretically enables information processing at terahertz clock rates. In optical quantum...
Levitated mesoscopic particles hold the promise of revolutionizing gravity sensing by using quantum effects. However, conventional quantum gravimeters...
We propose Scalable Quantum Molecular Generation (SQMG), a variational quantum-circuit for sampling molecular graphs using chemical priors on atoms an...
We propose and analyze an experimentally accessible Lindblad master equation for a quantum harmonic oscillator, simplifying a previous proposal to all...
The role of complex numbers in quantum theory extends beyond mathematical convenience, having recently been formalized as a resource under the framewo...
Quantum key distribution protocols based on the quantum eraser phenomenon offer an operational advantage: automatic identification of matching and mis...
Model-independent estimation of the properties of quantum states is a central challenge in quantum technologies, as experimental imperfections, drifts...
The speed and fidelity of dispersive readout of superconducting qubits should improve by increasing the amplitude of the measurement drive. Experiment...
Dynamic quantum circuits with mid-circuit measurement and classical feedforward are essential for near-term algorithms such as error mitigation, adapt...
Measurement-based quantum computation (MBQC) is a framework for quantum information processing in which a computational task is carried out through on...
Device-independent quantum key distribution (DI-QKD) provides the highest level of cryptographic security by certifying secrecy through observed Bell ...
We propose a novel measurement-free scheme for stabilizing a spin-oscillator hybrid qubit via autonomous quantum error correction. The engineered Lind...
The quantum computing community is increasingly positioning quantum processors as accelerators within classical HPC workflows, analogous to GPUs and T...
Insider Brief PRESS RELEASE — Infleqtion (NYSE: INFQ) (the “Company”) a global leader in quantum computing and quantum sensing powered by neutral-atom...
Insider Brief PRESS RELEASE — Infleqtion (NYSE: INFQ), a global leader in quantum computing and quantum sensing powered by neutral-atom technology, is...
QuantumDiamonds GmbH, the Munich-based specialist in diamond-based quantum sensing, has successfully installed its first QD m.1 system in the United S...
A particular type of linear optical multiport, the Grover four-port, has previously been shown to couple the spatial symmetry of a photon to its direc...
The field of high-dimensional quantum photonics involves the use of multimode photonic degrees-of-freedom such as the spatial, temporal, or spectral s...
Due to rising electricity demand, accurate short-term load forecasting is increasingly important for grid stability and efficient energy management, p...
Hybrid quantum neural networks are increasingly explored for classification, yet it remains unclear how their performance and quantum behavior scale w...
Dynamical decoupling is a long-established and effective way to suppress unwanted interactions in qubit systems, enabling advances in fields ranging f...
Mid-circuit measurements are one of the biggest practical hurdles in quantum error correction on encoded qubits. Researchers in Innsbruck and Aachen h...
Insider Brief PRESS RELEASE — The National Reconstruction Fund Corporation (NRFC) has invested AUD$20 million in Silicon Quantum Computing (SQC), a gl...
Insider Brief The term “quantum technology” has entered mainstream discourse with increasing frequency, appearing in government policy documents, corp...
Entangled quantum probes can achieve Heisenberg-limited measurement precision, but this advantage is typically destroyed by noise. We address this iss...
Interference provides a fundamental mechanism for generating and manipulating entanglement in many-body quantum systems. Here, we develop an interfere...
Solid-state spins in diamond are promising building blocks for quantum computing and quantum sensing, both of which require precise nanoscale addressi...
The arrow of time is usually attributed to two mechanisms: decoherence through environmental entanglement, and chaos through nonlinear dynamics. Here ...
Quantum computers have the potential to solve certain complex problems in a much more efficient way than classical computers. Nevertheless, current qu...
Large optical coherent-state superpositions are essential to advance quantum sensing, quantum repeaters and error-correction codes. We propose a deter...
We demonstrate violation of objective realism in quantum world using unconstrained weak measurements. Instead of limited Leggett-Garg approach with ar...
Quantum-correlated networks distribute quantum resources such as squeezed and entangled states. These states are central to modern quantum technology,...
Insider Brief PRESS RELEASE — Q*Bird, the Dutch leader in quantum secure communication, in collaboration with the Walton Institute at South East Techn...
Neutral atom arrays have seen tremendous progress in quantum simulation, quantum metrology, and fault-tolerant quantum computing. However, hardware co...
In continuous-variable quantum computing, autonomous quantum error correction (QEC) can dissipatively steer a noisy quantum state into a target state ...
Over the past decades, quantum scientists have introduced various technologies that operate leveraging quantum mechanical effects, including quantum s...