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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Entanglement certification of attosecond light fields with photoelectron interferometry
The emergence of entangled quantum optical states in high-harmonic generation raises a fundamental problem about its characterization, namely, \textit{how can entanglement of extreme-ultraviolet…Local Dephasing Sustains Continuous Time Crystals in a Spin-1/2 Ensemble
Local pure dephasing suppresses single-spin coherence, yet we show that it sustains continuous time-crystalline order in a fully connected ferromagnetic spin-$1/2$ ensemble with local decay.Fluctuation-free Quantum Battery Charging Enabled by Bell-like Entangled and Separable Charger States
The implication of entanglement in quantum battery charging remains poorly understood.Reset-Enhanced Dissipative Quantum Metrology
Quantum metrology is ultimately shaped not only by measurements, but also by the dissipative dynamics that prepare and maintain the probe.Can Entanglement-Induced Feature-Map Designs Improve Projected Quantum Kernels?
Projected quantum kernels (PQKs) have emerged as a notable approach to circumvent the hardness of machine learning tasks arising from the exponential dimensionality of the quantum Hilbert space.Rank-One Loss Maximizes the Spectral Response Strength of Passive Full-Order Exceptional Points
We consider finite-dimensional non-Hermitian systems in which all modes coalesce at a single exceptional point.High-fidelity entanglement of two spectrally-distinct solid state emitters
Solid state quantum emitters with electronic spin properties can be entangled using optical interferometric which-path erasure techniques that rely on identical frequencies and linewidths of the…Quantum Fokker-Planck solvers as trainable generative models
We develop and analyze generative models based on quantum solvers of stochastic differential equations.Automating quantum circuit optimization with AI agents
Compiling quantum algorithms for real devices involves hard optimization problems that can decide whether an algorithm runs at scale.Finite Systems in the Space of Projective Measurements
We investigate the dynamics of two-level systems using the quasidistribution $Q$ function projected onto the space of collective measurements.Orbital-coherence memory in electrical transport and its self-consistent Maxwell response
An internal electronic coherence changes electrical transport only when it feeds back on the physical current.Qubits Are Not Enough: Deflation and Measurement Limits in Variational Quantum Modal Analysis
Amplitude encoding stores an N-degree-of-freedom structural mode using ceiling(log2 N) qubits.Krylov Complexity and Entropy of Composite Quantum Systems
We investigate the behaviour of Krylov complexity as the number of degrees of freedom of a quantum system increases.Predictive electronic feedback control for narrow-linewidth lasers
Narrow-linewidth lasers are essential for various key atom-laser interaction processes and optical setups in quantum coherent control, quantum precision measurement, and quantum information science.Nonlinear quantum noise polarization in macroscopic nonlinear QED
We construct a quantum theory of light in nonlinearly responding materials with dispersion and absorption and, in particular, show the emergence of non-Gaussian noise associated with nonlinear…ConQEC: Concolic Testing for Quantum Error-Correcting Code Implementations
Quantum error-correcting code (QECC) implementations are hybrid software-control systems: measured syndromes drive decoder dispatch, recovery actions, and logical checks.Nanopillar metasurfaces uniting high optical reflectivity with ultracoherent nanomechanics
Mechanically compliant mirrors are key components in cavity optomechanics.The Impact of Markovian Errors on Random Circuits
Randomized benchmarking (RB) returns a single decay parameter or gate error rate, but when the noise is gate-dependent that parameter is notoriously difficult to interpret.One-shot entanglement generation and distillation via Petz recovery and binary hypothesis testing
How much entanglement can two distant laboratories share when their connection is noisy?Problem-aware sampling for bias and variance reduction in randomised Hamiltonian simulation
Randomised quantum simulation algorithms such as qDRIFT reduce circuit depth by replacing deterministic product formulas with stochastic compilations, but achieving high accuracy can require many…