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 82
Few-Magnon Universality beyond Contact Interactions in Long-Range Spin Chains
Quantum few-body systems exhibit a rich variety of phenomena that provide fundamental insights into universality.Perfect discrimination of an orthogonal $2\otimes2$ basis may require collective separable measurements on two copies
We consider an orthogonal basis of $\mathbb C^2\otimes\mathbb C^2$ with three entangled states and one product state.Device-to-protocol simulation of spectrally-resolved quantum photonic circuits
Predicting quantum-photonic circuit performance requires retaining source and device physics without making photon-counting calculations prohibitively expensive.Architectural Robustness to Label Noise Using Variational Quantum Circuits for Medical Image Classification
Label noise is prevalent in medical image datasets, arising from observer disagreement and ambiguous cases and deep networks memorize the mislabeled examples at the cost of generalization.Probe Signatures of Quantum Chaos with Quantum Sensing
The spectral form factor (SFF), which is the Fourier transform of the two-point spectral correlation, is a fundamental diagnostics of quantum chaos.Time-Frequency Continuous-Variable Quantum Teleportation with Single Photons
Quantum teleportation, a key building block for quantum technologies, enables distant parties, Alice and Bob, to transfer an unknown quantum state using entanglement, local operations, and classical…Deterministic preparation of squeezed and non-Gaussian states in coupled qubit-boson systems
Deterministic preparation of bosonic resource states is a central task in continuous-variable quantum information processing and quantum metrology.Bootstrapping Classical and Quantum Query Lower Bounds for Finding Tarski Fixed Points
The Tarski fixed-point problem asks for a fixed point of a monotone map on a $k$-dimensional grid lattice of width $n$ and has applications in game theory, economics, and verification.Collective Floquet engineering between two distant superconducting artificial atoms
A one-dimensional waveguide is a crucial medium for transferring propagating quantum information between remote qubits, yet the photon-mediated interaction is typically fixed by the static device…Minimal Subsystems for Characterizing Genuine Multipartite Entanglement
Genuine multipartite entanglement (GME) is a valuable resource for quantum technologies, but quantifying it in many-body systems can be demanding since measures defined through optimizations over…Classical and Quantum Information Measures Characterizing Convertibility: An Axiomatic Approach
In this PhD thesis, we take an axiomatic approach to studying multivariate divergences, which are measures of the information content of a tuple of classical or quantum states.Quantitative upper bounds for certain quantum channel divergences
We show that completely positive maps can be decomposed into sums of submaps which are close in completely bounded trace norm but as far apart as possible in terms of geometric channel fidelity.Metasurface quantum graphs for polarization-independent certified randomness
Quantum random number generators are crucial for information security, yet existing implementations are hindered by bulky optics, device imperfections, and state alignment constraints.Nested polynomial algebras and the exact spectrum of a three-dimensional two-spin oscillator
We construct representations of the symmetry algebra and derive the exact spectrum of a three-dimensional oscillator with two spin-$\tfrac12$ degrees of freedom.Finite-time quantum equilibration from local correlations
An isolated quantum system evolves reversibly, yet a small subsystem can lose nearly all information about its initial state.Pathfinder-BP: A Low-Latency Recursive Decoder for Topological Codes
We propose Pathfinder-BP, a recursive decoder for topological quantum codes that combines belief propagation with controlled bit-flipping.Benchmarking a randomized quantum algorithm for estimating expectation values of molecular observables
Randomized quantum algorithms for the estimation of expectation values of molecular observables offer a promising route to early fault-tolerant quantum advantage by trading circuit depth for an…Entanglement and parametric resonance in coupled oscillator systems
We study a system of two quadratically-coupled harmonic oscillators, prepared respectively in the ground state and in a coherent state.QBFF: Deep Quantum Bottleneck for Automatic Speaker Verification Anti-Spoofing
A central goal of quantum machine learning is to identify applications in which small quantum circuits can improve task performance while remaining executable on real hardware.Magic-Free Certification of Logical Error Rates in Universal Fault-Tolerant Circuits
As quantum hardware enters the fault-tolerant regime, algorithms are beginning to be executed on encoded qubits, yet scalable certification of how well they run remains an open problem.