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 166
Sharp universal death of entanglement threshold for Pauli Hamiltonians
We determine the exact universal high-temperature separability threshold for Pauli Hamiltonians of bounded degree $Δ\ge2$.Learning and interpreting policies for simultaneous entanglement requests in quantum networks
Future quantum networks will make use of entanglement to perform numerous tasks, such as sending quantum information over long distances, distributed quantum computing, and quantum sensing.Non-Abelian sheaf quantum LDPC codes: good and magical
Non-Abelian quantum codes connect quantum error correction, phases of matter, and computational resources.Optimal spectrum estimation
We prove that the spectrum of an unknown $d$-dimensional quantum state can be estimated to error $\varepsilon$ in total variation distance using \[ O\!\left(d^2\min\left\{ \frac{1}{(\varepsilon\log…Trading Circuit Depth for Pulse Sparsity in Chromatic Dynamical Decoupling
Suppressing decoherence and crosstalk systematically across large networks of qubits is a pressing concern as qubit counts increase rapidly.Loan Portfolio Optimization with Variational Quantum Algorithms
Loan portfolio optimization (LPO) seeks portfolios that minimize credit risk while satisfying practical selection constraints.Variational Multi-Gaussian Quantum Trajectories
We propose a variational framework for the efficient simulation of stochastic quantum dynamics in interacting bosonic systems.The Moreau-Yosida approximation of the Entanglement of Formation: basic properties and accuracy estimates
We describe a family of convex uniformly continuous functions $E^λ_F$, $λ>0$, on the set of states of a bipartite quantum system (consisting of finite-dimensional or infinite-dimensional…Deep thermalization and Hilbert space ergodicity
Recent advances in quantum simulation have enabled the discovery of novel forms of universality in quantum many-body dynamics.How Not to Build Microcrypt
A key challenge in quantum cryptography is to build quantum one-wayness and pseudorandomness without the use of (quantum computable) one-way functions.Quantum Feature Selection for Biomedical Data Analysis
Feature selection is an essential step for reducing complexity of high dimensional data, usually in preparation for developing machine learning models such as computational biomarkers.Quantum Channel Stein Theorem beyond Definite Causal Order
Distinguishability is a central concept in information theory and extends naturally to quantum systems.Onset of random-matrix statistics in the Yukawa-Sachdev-Ye-Kitaev model: Spectral correlations and Krylov complexity
The Yukawa-Sachdev-Ye-Kitaev (YSYK) model, a solvable model of non-Fermi liquids with a proposed cavity-QED realization, couples $N$ complex fermions to $M$ bosons of frequency $ω_0$ through random…Informational and algebraic renormalization group
Renormalization group (RG) is a core concept in physics from statistical mechanics to quantum field theory, yet its schemes differ widely between field theory and many-body physics.Disentangling the Toric Code
Commuting-projector Hamiltonians with integer spectrum such as the 1+1d Ising ferromagnet and the 2+1d toric code may be regarded as the generators of non-on-site $U(1)$ symmetries.Entanglement transitions in holographic conformal interfaces
We study entanglement transitions for pairs of disjoint intervals in two-dimensional holographic interface conformal field theories.Quantum advantage in learning single mode bosonic channels
Quantum resources can dramatically reduce the data required to learn physical systems, with exponential improvements in sample complexity demonstrated in several quantum learning tasks.A Mechanism for the Rényi Hierarchy of Decoherence-Induced Phase Transitions
Decoherence-induced phase transitions (DIPTs) are associated with singular changes in a quantum system's entanglement structure as the decoherence strength varies.Colored Weingarten Calculus for Block-Unitary Ensemble
Haar randomness is the standard null model for quantum typicality, scrambling, and random-matrix formulations of thermalization.Rényi Phase Transitions and Analytic Continuation to the von Neumann Entropy
Extracting operationally meaningful quantities such as von Neumann entropy and mutual information is central to characterizing many-body quantum systems, yet experiments and numerics often provide…