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 79
Optical parametric amplification of spatiotemporal optical vortices
Spatiotemporal optical vortices (STOVs) are structured light featuring a phase singularity in the spatiotemporal domain, exhibiting unique topology that couples spatial and temporal dimensions.Methods for Automated Equivalence Checking of Quantum Error-Correction Codes
Quantum error-correction code and circuit construction is an active field of research, motivating automated methods for identifying equivalent designs.PPVM: A Circuit Simulation Framework for Digital Twins of Quantum Processors
Quantum computers are approaching the early fault-tolerant regime.Resource-based reliability of quantum-coherent devices
Quantum devices can lose the resource needed for a specified function without entering a fixed failure subspace.Autonomous optomechanical Maxwell Demon engine
We present a fully autonomous model of a mechanical Maxwell demon engine that converts heat absorbed by a qubit into population inversion in an attached quantum battery.Experimental Benchmarking of a 256-Qubit Room-Temperature NV-Diamond Quantum Processor with an Optically Programmable Biomolecular Quantum Bus
We report Zeus-256, a room-temperature nitrogen-vacancy (NV) diamond processor with 256 simultaneously active processor-level logical qubits arranged in a 16 x 16 array.A complete quantum process model for physically realistic photo-detection in the joint photon-number and spectral degrees of freedom
Photo-detection is a fundamental component of experimental photonics, yet theoretical models often treat detectors solely in the photon-number basis, neglecting other relevant degrees of freedom…Role of dissipation dilution in achieving high mechanical quality factors in van der Waals resonators
Dissipation dilution has driven a revolution in the quality factors ($Q$) of top-down nanomechanical resonators.V-type Atomic Variance Squeezing
Variance squeezing of a V-type atom interacting with a dissipative cavity is investigated.Beyond Gaussian Entanglement: Practical Criteria for Polynomially Excited Quantum States
Polynomial excitations consisting of creation and annihilation operators are studied.Orbital Angular Momentum Transfer and Beam-Quality Limits in Fork-Grating Electron Diffraction
We analyze fork-grating generation of electron vortex beams beyond the ideal single-mode approximation.Unequal Coherent Ergotropy at Equal Interferometric Visibility and Energy in Quantum-Controlled Interferometers
The ergotropy, or unitarily extractable work, of a quantum system naturally splits into incoherent and coherent contributions, respectively set by population inversion and coherences in the energy…Experimental Realization of a C-Shunt Flux-Qubit Coupler for Controlled-Z Gates between Transmons
Fast entangling gates and low-interaction idling require distinct operating conditions in superconducting quantum processors.Lifting: Quantum State Discrimination Framework for Mid-Circuit Measurements
Quantum computing promises new capabilities beyond classical computation.Steering the Fidelity in State Preparation on Noisy Bosonic Systems with Risk-Seeking Optimization
In order to execute quantum algorithms on bosonic quantum computers, it is necessary to encode their inputs into a desired target quantum state, with a process called state preparation.Phases of a rotating Bose-Einstein condensate trapped in a hard-wall potential
We investigate the rotational properties of a zero-temperature Bose-Einstein condensed gas, which is confined in a hard-wall potential.On the Increase of Boltzmann Entropy in Closed Macroscopic Quantum Systems
We consider a closed macroscopic quantum system in a pure state $ψ$ evolving unitarily with Hamiltonian $H$ in a finite-dimensional Hilbert space $\mathscr{H}$.Can the system dynamics remain structurally non-Markovian while its experimentally accessible memory signatures disappear?
We investigate how unresolved quasistatic disorder in system bath coupling affects non-Markovian dynamics in spin environments.$T$-efficient unitary synthesis via block-sparse Hamiltonian simulation
We construct Clifford+$T$ circuits implementing arbitrary $n$-qubit unitaries with worst-case $T$-count $\widetilde{O}(N^{8/7})$ at constant operator-norm error, where $N=2^n$, improving the…Dark state preparation in a zero-field-split molecular triplet
We propose a protocol to prepare and probe dark states in a single-molecule electron spin resonance based on atomic force microscopy (ESR-AFM), thus extending existing techniques developed to…