Quantum Physics · Physics & Astronomy
Quantum Physics
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3,630 papers, from 4 September 2026 to 5 November 2026: 3,630 arXiv preprints.
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Newest papers, page 151
Advantage of Sample Complexity in Quantum PAC Learning Requires Inverse Access to State-Preparation Unitaries
Whether quantum computation can reduce the amount of data sampled from an unknown probability distribution required to learn a prediction rule is a fundamental question in quantum machine learning.Classical Verifier Position Verification from Non-Local Games
Secure position verification certifies that a remote prover occupies a claimed location, a task that is provably impossible with classical resources alone against colluding adversaries.Quantum Secure Non-Interactive Reductions
Efficient models for secure computation often rely on offline preprocessed correlations, which subsequently enable private online computation from minimal assumptions.Q-SPARSE: Quantum Subspace Projection for Near-Field Angle-Range Spectrum Estimation
Near-field wavefront curvature enables joint angle-range localization, but exploiting it entails repeated covariance-eigenspace tests over a two-dimensional spherical manifold.Copy-scarce learning of ground states
Probing multiple properties of ground states is central to understanding quantum matter, yet conventional readout can be prohibitively costly because it consumes many independently prepared copies.Single-particle detection of the Néel transition in LaCrO$_3$ microcrystals via widefield nitrogen-vacancy center magnetic imaging
Rare-earth orthochromites exhibit rich, chemically tunable magnetic behavior, making them attractive for temperature sensing and temperature-dependent switching applications.Input-output formulation of quantum light spectroscopy
We develop an input-output formulation of quantum light spectroscopy (QLS) by combining the input-output theory, commonly used in quantum optics, with the perturbative expansion method for nonlinear…Proposal for matter-wave interferometry with a rare-earth-doped microparticle
Matter-wave interferometers are sensitive probes of low energy physics and have been used for precise tests of gravity and quantum mechanics.MORE Thermal Gauge Theories at Finite $θ$ and $μ$ from Real-Time Quantum Simulation
Imaginary-time evolution can be reconstructed from real-time quantum simulations using exact integral transforms.Normal-ordered perturbative expansion for matter systems interacting with continuous-mode quantum photon fields
We develop a normal-ordered perturbative expansion method to compute the reduced dynamics of a matter system interacting with a general continuous-mode photon field state.Algebraic Characterization of Biphoton Spatial-Mode Entanglement in Higher-Order Laguerre--Gaussian-Pumped SPDC
High-dimensional spatial entanglement generated via spontaneous parametric down-conversion (SPDC) provides a powerful resource for quantum information processing, yet its mode structure becomes…Passive realism in the presence of open system dynamics
We introduce the terminology \emph{passive realism} to encapsulate the scale-independent assumption that a physical system's pre-existing properties can be passively observed without altering its…Towards noble gas quantum optical magnetometry using direct ultraviolet detection
We analyze a novel approach for quantum magnetic sensing via optical detection of nuclear spin precession in a noble gas.Native implementation of the machine-learned Skala exchange-correlation functional in CP2K: Unified one-centre reconstruction for molecular and condensed-phase calculations
We implement the machine-learned Skala exchange-correlation (XC) functional natively in CP2K using its Gaussian and plane-wave (GPW) and Gaussian and augmented-plane-wave (GAPW) methods.Tensor-Engineered Van der Waals NbOCl2 Resonant Metasurface for Polarization-entangled Bell State Generation
Polarization-entangled photon pairs are essential resources for quantum information technologies, yet realizing compact sources with intrinsically controllable entanglement remains challenging.The equivalence of topological indices for $\mathrm{U}(1)\rtimes\mathbb{Z}_2$-symmetric quantum spin chains
Symmetry-protected topological (SPT) phases in quantum spin chains are distinguished by topological indices.Nakayama's reduction of quantum topos and Bayesian quantum computing
Nakayama found the way to limit the contexts in the Döring-Isham topos quantum theory and unified such limitation and the definition of probability as a single choice of topology.Quantum memory in an effective $Λ$-type system using dynamic detuning control of a superconducting qubit pair
We theoretically investigate quantum-light storage in an effective $Λ$-type system formed by a pair of tunable superconducting qubits coupled to a semi-infinite transmission line and separated by…Monotonicity of the Rényi channel capacity under non-signaling assisted channel simulation
We ask whether non-signaling correlations shared between the sender and receiver can increase the Rényi capacity of a classical channel.A threshold for maximal Schmidt number from spectrum
The Schmidt number quantifies the dimensionality of entanglement in bipartite quantum states.