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 149
Optical Fourier Architecture for Universal Nonlinear Functions
We introduce an exact algebraic architecture that evaluates an arbitrary finite Fourier series using a two-mode ($2 \times 2$) linear optical circuit, with the only tunable components being…Spin-exchange interactions between circular Rydberg atoms over long times
Arrays of neutral atoms excited to Rydberg levels have emerged as one of the most promising platforms for quantum computation and simulation.Multistate Torsion in Zitterbewegung
We derive nonlinear Zitterbewegung velocity of electrons augmented by band torsion in crystals.Optimal single-copy estimation of quantum state moments: why $\operatorname{Tr}(ρ^3)$ and $\operatorname{Tr}(ρ^4)$ are equally hard
Estimating nonlinear properties of an unknown quantum state with restrictive experimental accessibility is a fundamental problem in quantum learning.Quantum Complexity of Ancilla-Free Unitary Embeddings for Nonlinear Dynamics via Generalized State-Dependent Double-Bracket Flows
Simulating nonlinear dynamics with quantum computers has gained increasing attention.Measuring the spin of a spin-1/2 and getting a result of 7
The weak value of an operator is the average result of measuring that operator on a quantum system given specified initial and final states.Attosecond correlation interferometry
Correlations between optical modes, ranging from classical fluctuations to quantum entanglement, are a cornerstone of modern optics and emerging quantum technologies.Towards verifiable quantum advantage with random circuits: Observables that survive concentration
Demonstrating quantum advantage on current quantum hardware is a central goal of quantum computing, and random quantum circuits underpin many leading proposals.A Neutral Atom-Based Hybrid Classical-Quantum Approach for the Entanglement Routing Problem
Efficient end-to-end entanglement distribution in quantum information networks requires routing under limited resources and fidelity constraints.Optimal Quantum Junta Testing without Inverse Queries
We study the query complexity of testing quantum juntas.Strong-to-Weak Spontaneous Symmetry Breaking of Dephased Fermions
Strong-to-weak spontaneous symmetry breaking (SWSSB) is a novel phase transition in mixed states associated with the loss of global charge information.Rapid Mixing of Parallel Kac's Walk: From Spheres to Stiefel Manifolds
Kac's walk is a classical local random walk whose action on a single real unit vector in dimension $d$ mixes in total variation in $Θ(d\log d)$ sequential steps~\cite{PS17}.Improved estimate of local Markovianity for quantum Gibbs states
We establish improved locally Markovian properties of quantum Gibbs states at every fixed positive temperature.Density Matrices of Pulsed Quantum Light
Pulsed light is represented by density matrices whose correlation functions have different properties of stationarity and coherence.Universal quantum coding
Entanglement distillation from noisy bipartite states and reliable quantum communication over noisy channels are fundamental tasks in quantum information theory, yet optimal coding schemes typically…A Tale of Two Walks: Kipnis, Marchioro and Presutti Meet Kac in a Quantum World
We reveal an unexpected connection between the parallel Kac's walk and the Kipnis-Marchioro-Presutti (KMP) process.Classical Verification of Quantum Computation with Quasilinear Resources, from Compiled Nonlocal Games
Computational self-testing gives a classical verifier command over the quantum register of a single computationally bounded prover.Optimal Quantum-Classical Separations for Exact Learning
We study exact learning with membership queries for concept classes $\mathcal C\subseteq\{0,1\}^N$, focusing on the relationships among their deterministic, randomized, and quantum query…Ramanujan quantum expanders from the Weil representation
For every odd prime power $q$ and $D=q+1$, we construct an infinite family of Ramanujan quantum expanders of degree $D$.A commuting operator self-test for exact entanglement embezzlement
We show that the optimal commuting operator correlation for a variant of Coladangelo's two-player generalized nonlocal game, based on the embezzlement of entanglement, is a commuting operator…