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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Geometry-optimized hyperbolic codes for modular fault-tolerant quantum architectures
Quantum fault tolerance is a prerequisite to harness the full potential of quantum computers.A Flash-Based Relativistic Collapse Model for Quantum Fields
Spontaneous collapse models provide a possible, testable solution to the quantum measurement problem, but constructing a relativistic version applicable to quantum field theory remains an important…Structured leakage in OAM-encoded qubits revealed by distributed quantum feature extraction
Orbital angular momentum (OAM) modes have emerged as an important platform for high-dimensional quantum communication but remain vulnerable to environmental noise and channel imperfections.Fast entanglement generation via cavity-mediated nematic tensor dynamics
Many-body entanglement in atomic ensembles offers the potential for enhanced sensing devices.Grover Search for a Threshold-Fraction Variant of the Travelling Salesman Problem: A Circuit-Level Construction
The Travelling Salesman Problem (TSP) is a classic combinatorial optimisation problem which is NP-hard in optimisation form and NP-complete as a decision problem.Can the Quantum Fisher Effective Dimension Judge a Hybrid Quantum Neural Network?
Hybrid quantum neural networks (QNNs) pair a classical feature extractor with a variational quantum circuit, and the effective dimension of the circuit's quantum Fisher information matrix (QFIM) is…Quantum Darwinism through apparatus-mediated environmental recording
Quantum Darwinism explains classical objectivity through redundant environmental records of a system's pointer states.Excitation of subradiant states in atom chains by surface plasmon waves
Subradiant states of a finite subwavelength atomic chain in free space offer a powerful resource for photon storage.Spectroscopy using dipole-phonon quantum logic
Dipole-phonon quantum logic (DPQL) offers novel approaches for state preparation, measurement, and control of quantum information in molecular ion qubits.Sparse qubit operation in a 6$\times$6 quantum dot array
Fault-tolerant quantum computation requires increasing the qubit count while maintaining high performance and connectivity.When Expressivity Is Not Enough: Discrete Routing Geometry in Variational Quantum Circuits
Finding useful variational quantum circuits requires more than representational capacity: training must also have access to directions that improve the objective.Demonstration of Parallel Multi-QPU Execution for Fragment-Based Quantum Chemistry Using On-Premises Hardware
Fragment molecular orbital (FMO) quantum chemistry offers a natural route to parallel quantum computing: large molecular calculations can be decomposed into smaller quantum subproblems that can, in…Convergence Without Finite Exactness in the Eigenstate Quantum Bootstrap
The eigenstate quantum-mechanical bootstrap can converge to the physical moment set while remaining nonexact at every finite order.Spontaneous Hawking Radiation from Dynamical Black-Hole Formation in Quantum Spin Systems
We show that Hawking radiation spontaneously generated by dynamical black-hole formation can be realized in a local quantum spin model.Quantum telescopy with realistic anti-correlated optical fields as references
Quantum telescopy, proposed by Grottesman et al., uses spatially entangled single-photon states to modify HBT stellar interferometry, potentially surpassing Michelson interferometry in resolution…Quantum Data Ruler
A ruler reads an unknown length against a calibrated scale.Charging Dicke and Tavis--Cummings quantum batteries with a $\mathcal{PT}$-symmetric lossy--gain cavity pair
We study how a parity--time-symmetric photonic environment changes the charging of Dicke and Tavis--Cummings quantum batteries.Horizon-Scale Corrections to Black Hole Geometry from a Conserved Quantum Atmosphere
Black holes are usually described either as classical geometries on which quantum fields propagate or as objects whose complete quantum description lies beyond semiclassical gravity.Polaronic Response of a Supersonic Impurity Strongly Coupled to a Bose Condensate
How a mobile impurity exchanges momentum and energy with a many-body environment is a central question in nonequilibrium quantum physics.Divisibility of Non-Invertible Quantum Dynamics in the Heisenberg Picture
We study divisibility of finite-dimensional quantum dynamics in the Heisenberg picture when the dynamical maps need not be invertible.