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 39
A General Framework for Leggett--Garg Violation in Neutrino Oscillations and Matter Effects
The Leggett--Garg inequality (LGI) constrains temporal correlations under the assumptions of macrorealism and noninvasive measurability.Large Language Models for Quantum Code Translation: An Exploratory Study
Quantum software development is challenged by quantum-mechanical semantics and fragmented software development kits (SDKs), which complicate cross-SDK code translation and execution.Modulation and protection of entanglement in a two-qubit system via two interacting oscillator control
We investigate the control and protection of two-qubit entanglement through engineered interactions between two auxiliary harmonic oscillators.Heisenberg-Scaling Quantum Metrology of Electron-Photon Coupling via Multi-Electron PINEM
Free-electron quantum optics has recently emerged as a promising platform for coherent electron-light interactions, yet its potential for quantum-enhanced metrology remains largely unexplored.Membership in the cone of quantum states over time is NP-hard
A state over time (stote) pairs a state $ρ$ with a channel $\mathcal{E}$ as the Hermitian, generally non-positive operator $(ρ\otimes\mathbf{1})\star J_\mathcal{E}$.Charge-Coupled Device-Based Arbitrary Waveform Generation for Qubit Control
We propose an arbitrary waveform generation architecture based on charge-coupled devices (CCDs) for qubit control.From Single Spins to Ensembles: A Calibrated Symbolic Regression Pipeline for NV Spectroscopy
Characterizing nitrogen-vacancy (NV) ensembles requires connecting their collective spectra to individual centers that experience different local environments.Self-Correcting 3D Surface Code with Growing Local Dimension
We construct self-correcting 3D surface codes over $\mathbb Z_q$ with local dimension $q$ growing with system size.Multinomial shot sampling for quantum circuits
In classical simulations of quantum circuits, sampling shots (measurement outcomes) from the final state is a routine but costly step.Comparing classical and quantum QUBO solvers: optimality, trajectory diagnostics, and limits of solver selection
Comparing solvers for quadratic unconstrained binary optimization (QUBO) requires distinguishing solution quality from optimality certification.External-field-modified entropic exchange in confined quantum systems: static versus time-dependent electric fields
We review how external electric fields reshape the information content of spatially confined atoms, and we contrast the response to a uniform static field with that to a monochromatic…Complete characterization of internal-external entanglement trade-offs in two-mode Gaussian states
We characterize the exact trade-off between internal and external entanglement in asymmetric two-mode Gaussian states at fixed local symplectic eigenvalues.Quantized-resonance description of a quantum emitter dynamics in a lossy multimode cavity
In the multimode regime of cavity quantum electrodynamics (cQED), light-matter coupling can be strong enough such as to allows a quantum emitter to couple with multiple resonant field modes.Photometric Redshift Estimation with Hybrid Quantum Neural Network
A Hybrid Quantum Neural Network (HQNN) is applied to recover the photometric redshift of a galaxy dataset built using data from two astronomical surveys, the Kilo-Degree Survey (KIDS) and the VISTA…Basis-set error bounds for first-quantised quantum simulation of chemistry
In quantum simulation of electronic structure it is often expected that the estimate of the ground energy converges to the continuum basis limit at a rate of $\mathcal O(N^{-1})$ for a basis of size…A Control Line Multiplexing Framework for Scalable Quantum Computing
Universal fault-tolerant superconducting quantum computers are expected to require millions of physical qubits; yet extending the prevailing dedicated-control-line paradigm to this scale would…Bargmann-invariant witness of the graviton commutator
We identify the phase of a Bargmann invariant of two matter-wave interferometers as a quantum gravity signature that cannot be reproduced by any branchwise-definite classical gravitational field.Quantum-Classical Framework for the Joint Optimization of Bidirectional EV Charging and Trip Assignment
The integration of bidirectional (V2G) charging allows electric vehicle (EV) fleets to operate as distributed energy assets.Spectral fingerprint recognition of mobile signals via Rydberg atomic sensors
Rydberg-atom sensors have emerged as a promising quantum technology for broadband radio-frequency detection owing to their intrinsic calibration, wide frequency coverage, and high sensitivity.Measurement-dependent reduction of open dynamics in the quantum phase estimation algorithm: the visible subspace and the damped Fejér kernel
For the quantum phase estimation (QPE) algorithm we study the minimal space of observables that is sufficient to predict the entire output distribution under open dynamics of the counting register.