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 86
Genuine Information Backflow Requires Noncommuting Initial System States
The Gorini-Kossakowski-Lindblad-Sudarshan (GKLS) equation, a cornerstone of open-system theory, describes Markovian semigroup dynamics in which information about the initial preparation cannot revive.Quantum circuit representation and incomplete Bell measurements in Compton scattering
We formulate massless tree-level Compton scattering as an effective two-qubit operation on electron and photon helicities.Breakdown of thermalization in quantum spin systems with long-range interactions
Quantum thermalization of closed systems -- i.e. the relaxation of local properties to their thermodynamic value along the Hamiltonian evolution -- is generically expected in non-integrable systems…Ergodicity breaking transition beyond qubits
The local Hilbert space dimension is a fundamental parameter in quantum many-body systems, but its role in controlling the ergodicity-breaking transition remains less explored.Riemannian Formulation of Sample-Based Quantum Krylov Solvers for Elliptic Problems: Energy-Norm Guarantees and Duct-Flow Applications
Sample-based quantum linear solvers measure quantum Krylov states $e^{-iAT}|b\rangle$ and reconstruct the solution of $Ax=b$ classically on the observed basis states.A Quantum Analogue of the Covering Lemma: Limits of Exact Anonymous Computation
Can quantum communication determine the size of an anonymous network when no size bound is known?Proposal for a multi-ion optical clock with hundreds of ions
Scaling trapped-ion optical clocks to hundreds of ions remains a major challenge due to inhomogeneous frequency shifts in large ion crystals.Non-Stationary Quantum Systems Associated with Stationary Scattering in One Dimension
Stationary scattering admits a dynamical formulation in which the scattering data are extracted from the evolution operator for an effective non-stationary and non-unitary quantum system.Separability criteria and lower bounds of entanglement via realignment
The detection and quantification of quantum entanglement are central problems in quantum information science.Molecular Vibronic Complexity as a Quantum Resource for Optimal Control: Nonadiabatic Mixing Creates Protected Coherence Subspaces in Dissipative Environments
In molecules, electronic coherence typically decays within a few hundred femtoseconds, a timescale usually attributed to the environment.Spatial interference changes the symmetry class of a Josephson element
Spatial interference can break the inversion symmetry of an effective Josephson potential even in a laterally homogeneous junction with inversion-symmetric local energy.Variational Minimization of Almost Strong Zero Modes in Parafermionic Wires
Strongly interacting fermionic chains obeying a $Z_n$ symmetry can host topological phases with highly degenerate ground-state manifolds.Nonperturbative optomechanics with thin, weakly reflective intracavity dielectrics
Levitated dielectric sensors are often treated as perturbative probes of a pre-existing optical field.An optimization problem for $δ'$ leaky stars
We consider singular Schrödinger operators with an attractive $δ'$ interaction of strength $β$ supported by a star graph and prove that the ground-state eigenvalue is uniquely maximized by stars of…Rate and depth of two-axis twisting by pair exchange under the self-Kerr constraint
In this paper, we study two bosonic modes that exchange pairs of quanta, which realize two-axis twisting exactly: within a sector of fixed particle number the exchange operator is proportional to…Violation of Bell-type Inequality in the Hanbury Brown-Twiss (HBT) Toy-Model: Quantum Correlations beyond Local-Realism
The Hanbury Brown-Twiss (HBT) effect marked a significant milestone in quantum optics by illustrating that intensity correlations can reveal inherently quantum features of light.Quantum ordinal optimization under a fixed comparison budget
Ordinal optimization selects designs that are good enough rather than optimal when evaluation is expensive and the budget is small.Eigenstate transitions and critical transport in 3D Aubry-André model
We numerically study spectral and wave-function properties, as well as time evolution, in finite-size commensurate approximations of the 3D Aubry-André model.Quantum Localization in Geometric Complex Networks
Quantum localization, the phenomenon by which wave diffusion is halted, here understood as the superposition of propagating waves, can have many different origins, such as onsite random potentials…End-to-End Fidelity and Rate Analysis for Zero-Added-Loss Multiplexing
Zero-added-loss multiplexing (ZALM)~[Phys.