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 156
Out-of-time-order Correlators in Volcano potentials
The out-of-time-order correlator (OTOC) has emerged as an important diagnostic for quantum information scrambling and a key signature of quantum chaos.Digital Quantum Algorithms for Generating and Utilizing Spin Squeezed States
Spin squeezed states (SSSs) are conventionally viewed as analog resources for quantum metrology.Fast Hamiltonian engineering from cut polytope geometry
Hamiltonian engineering (HE) simulates quantum dynamics under a target Hamiltonian using a native entangling system Hamiltonian and restricted control, with applications from quantum gate design to…Entanglement spectrum and magic in higher-dimensional free fermionic systems
We study fermionic non-local magic in higher-dimensional free-fermion systems through the lens of the entanglement spectrum.Is rapid mixing stable?
Several physically interesting Lindbladians, such as those describing generic open quantum system models as well as engineered state preparation processes, are often rapidly mixing, that is, they…Independent density and coherence skin effects in adaptive fermion circuits
Adaptive circuits use measurements and outcome-conditioned feedback to implement nonreciprocal dynamics without postselection.Out-of-Time-Ordered Correlators Beyond Lindblad
Out-of-time-ordered correlators (OTOCs) provide a powerful probe of quantum chaos and scrambling.Quantum Estimation under Decoherence in Neutrino Oscillations: Quantum Resources, Flavor Accessibility, and Multiparameter Incompatibility
Neutrino oscillations offer an interferometric setting for open-system dynamics, quantum resources, and parameter estimation.From Projected Subspaces to Full-Space Implementations: Representation-Equivalence Audits for Open-Shell ADAPT-VQE
A variational state optimized in a symmetry-projected space need not be the state prepared by exponentiating the corresponding unprojected parent generators.Witness-based quantification of non-Markovianity without complete Choi state reconstruction
Quantifying non-Markovianity is a fundamental problem in the theory of open quantum systems, as it is essential for exploiting environmental memory as a resource in quantum technologies.Collectivity limits quantum entanglement
Understanding what limits many-body quantum entanglement is a central problem in physics.Near-Optimal Parallel Unitary Process Tomography in Diamond Distance
Unitary process tomography is the act of learning how an unknown unitary gate acts on a quantum system.From Classical to Quantum Channels: Achieving Positive Covert Rates
In this paper, we study the conditions under which covert communication at positive rates is feasible over discrete memoryless classical, classical-quantum, and quantum channels.A partially linearized mapping approach to surface hopping (MASH-PLDM) for nonadiabatic dynamics and nonlinear spectroscopy
We derive a partially linearized version of the mapping approach to surface hopping (MASH) that provides a new method for simulating nonadiabatic dynamics in molecular systems.Near-optimal quantum simulation of lattice Lindbladian dynamics
We consider the problem of simulating dynamics under geometrically local Lindbladians acting on a lattice of qudits.What is Physics For? Why Classical Physics is not the Limit of Quantum Mechanics
Quantum mechanics is justifiably held to be the most successful physical theory ever created; yet no universally accepted interpretation of its mathematical formalism exists after a century of debate.Bivariate Bicycle Codes over Group Algebras
We study a weighted-shift formulation of bivariate bicycle group-algebra (BBGA) codes over finite group algebras.Quantifying Teleportation Overhead in Distributed Unitary Coupled-Cluster Ansätze
Distributed quantum computing (DQC) has been proposed as a way to scale quantum algorithms for practical applications beyond monolithic quantum processor architectures.Puncturing for Adaptive Entanglement-Assisted Stabilizer Codes
Quantum error-correcting codes are essential for reliable quantum communication.Conversable Quantum Fire in the Standard Model
Quantum fire consists of quantum states that can be efficiently functionally cloned but cannot be transmitted using one-way classical communication.