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 67
Temperature dependence of the Casimir force between plane-layered structures: an approach based on the principle of argument
Based on the complex analysis theorem the principle of argument, a temperature-dependent formula for the Casimir-Lifshitz dispersion force of the interaction of two arbitrary plane-layered…Bell scenarios encode classical non-causality
Bell and contextuality scenarios are unified within the Acín-Fritz-Leverrier-Sainz hypergraph formalism, in which measurements are hyperedges.Resonance crossings and diabolical points for DC electric field quantum sensors
Since the 1990s, experiments on double-well heterostructures have highlighted a key phenomenon: applying an external DC electric field induces pronounced wave packet oscillations at specific field…Quantum Sensitivity of $N$-Component Cat States
We extend our previous study of squeezed two-component Schrödinger cat states to a phase-referenced single-mode family with an arbitrary number $N$ of coherent components and general relative phases.Quantum Circuits for Variable-Coefficient Vlasov Dynamics via Schrödingerisation
High-dimensional Vlasov equations present promising use cases for quantum simulation, but their transport coefficients must be implemented coherently in order to preserve a compact quantum…ConQUESTA: Topology-Aware Post-Training Structural Pruning of Quantum Neural Networks
Deploying quantum neural networks (QNNs) on sparse hardware requires preserving task accuracy while reducing compiler-induced two-qubit gates, SWAPs, and depth.Cayley access models for matrix functions: reachable class and cost
We study how to compute $f(A)b$ on a quantum computer, where $A$ is Hermitian.A Fibre-Integrated SPDC Heralded Single-Photon Source Using Zn-Indiffused PPLN Ridge Waveguides at Telecom Wavelengths
We demonstrate a fully fibre-integrated source of broadband polarisation-entangled photon pairs at telecom wavelengths based on a commercially available Zn-indiffused MgO:PPLN ridge waveguide…Solving Large-Scale Parameter Inference in Controllable Nuclear Fusion via Coherent Ising Machines and Block Coordinate Descent
Bayesian inference enables self-consistent plasma parameter inversion in tokamak integrated data analysis by fusing multi-source diagnostics.Temperature dependence of a warm ensemble based memory on quantum communication rates
The success of long-distance quantum communication will hinge on quantum repeater nodes equipped with robust and scalable quantum memories.Electrostatic Limits on Quantum Spatial Search
We prove that a quantum walker cannot search a two-dimensional lattice in Grover's $O(\sqrt N)$ time, resolving the long-standing open question posed by Aaronson and Ambainis in 2003.Action-Quantized Scar Multiplets and Dissipative Cat States from Fractal Period-Locking in the Open Quantum Baker Map
We open the quantum baker map with a position window of width $w$ and center $q_c$.Holographic two-point functions across a PT symmetry-breaking transition
In parity-time (PT)-symmetric non-Hermitian systems, an exceptional point, where eigenvalues and eigenvectors coalesce, typically separates a real spectrum from complex-conjugate eigenvalues.Improving the estimation of spin-bath parameters via initial correlations and a two-qubit probe
We study how a second qubit can improve the estimation of spin-environment parameters when only one of the two qubits is measured.Certifying information flow in multi-agent behaviours
We study which input-output behaviours of several agents can be produced by a declared communication schedule, that is, a fixed sequence of senders, recipients, message alphabets, and output times…Partially isophase electro-magnetic configurations
Separation of variables in Schrödinger equation allows an infinite-dimensional family of physically distinct field configurations that are dynamically indistinguishable in one selected sector…Delta-sigma noise shaping for low-resolution quantization in Gaussian-modulated continuous-variable quantum key distribution
Low-resolution digital-to-analog conversion can simplify continuous-variable quantum key distribution (CVQKD) transmitters, but coarse quantization increases excess noise and can generate…Impact of Irrep Truncations on Quantum Simulations of QCD
Quantum simulations of lattice gauge theories with continuous gauge groups require a choice of basis (how states of the gauge theory map to the qubit computational basis) and truncation scheme…Expressivity of IQP Feature-Map Quantum Kernels via Reproducing Kernel Hilbert Spaces
Quantum kernels are among the most promising methods in quantum machine learning, providing a natural way to embed data into high-dimensional Hilbert spaces via quantum circuits and capturing…Recursive Operator Localization and Spectral Gap Descent via the Geometry of Local Spectral Expansion
We introduce Recursive Operator Localization (ROL), a framework for constructing hierarchies of local energy problems linked by linear maps between Hilbert spaces.