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 98
Quantum Optimization of the Color-of-Money Problem on IBM Quantum Hardware: A Proof-of-Concept Study
The Color-of-Money (CoM) problem is a financial optimization challenge in which enterprises must determine how to allocate and route funds across multiple accounts, currencies, and time periods…Redundant Records of the Past: Unifying Quantum Darwinism and Decoherent Histories
There exist two different paradigms for records in isolated quantum systems: decoherent histories (which determines which past events leave formal records) and quantum Darwinism (which determines…Spacetime Quasicrystals and Computational Complexity Theory in the Road Towards Quantum Gravity
Part I: Semiclassical Gravity Efficiently Solves $\mathsf{NP}$-Complete Problems Assuming the gravitational field is classical and that it couples to quantum fields via the semiclassical Einstein…Coherent consensus for the estimation and classification of phases
Inspired by quantum metrology, we propose a coherent consensus primitive to enhance the collaborative performance of independent quantum classifiers at the decision boundary.Extensively degenerate superradiant phase in a giant-atom quantum Rabi ring
We show that an $N$-site quantum Rabi ring with matched giant-atom couplings has $2^N$ degenerate superradiant configurations as the atomic-to-cavity frequency ratio $η=Δ/ω$ tends to infinity.Path Complementarity Enables Directional Quantum Light in Hybridized Cavity Polaritons
Directional quantum light requires asymmetric photon statistics without sacrificing coherence between propagation paths, a combination that remains difficult to achieve within a single…Kerr-Filtered Hybrid States from Double-Squeezed Tripartite Interactions
Multipartite interactions provide a unique route to generate hybrid quantum states, yet their intrinsically weak nonlinear coupling limits the controllable manipulation of the resulting correlations.Beyond Spectroscopic Strong Coupling: Operational Benchmarks for Cavity-to-Magnon Quantum Transfer
Normal-mode splitting reveals coherent cavity--magnon hybridization but does not certify finite-time quantum-state transfer.Sufficient quantum provenance: retained fields and certified recording precision
Which execution details must a quantum computation retain, and to what precision, to support a declared comparison?On the Expressive Power and Capacity of Quantum Data Reuploaders
Data reuploading---repeatedly encoding classical inputs at multiple layers of a parameterized quantum circuit---is a central mechanism for enhancing the expressivity of quantum neural networks (QNNs).Dissipation-selected photon-phonon pair and photon-bundle emission in a tripartite Mollow system
Dissipation is generally regarded as detrimental to nonclassical-state generation, yet whether it can determine which quantum resource is emitted from an open hybrid quantum system remains largely…Cotunneling-Assisted Redistribution of Nonpassivity in a Photosynthetic Junction
We investigate how cotunneling affects passive-state ordering in a Photosystem II reaction center modelled as a nonequilibrium molecular junction.Causal confusion in quantum systems: distinguishing direct cause and common cause
The joint expectation values of quantum observables measured by two parties typically depend on the causal structure of the measurement protocol.Moment Methods for Uniform Average Mixing on Strongly Regular Graphs
We study continuous-time quantum walks on connected strongly regular graphs that are not complete, observed at a random time drawn from a freely chosen probability law.Can we make sense out of negative kinetic energy?
Many Quantum Field Theory models, either designed to improve the ultraviolet behavior via higher derivative terms or aimed at providing unified descriptions of Gravity, inevitably introduce…Tradeoff between Wigner negativity and decoherence time for cubic Gaussian states
Wigner negativity has been shown to be a resource in quantum computing, raising the question of how to efficiently produce states with a large Wigner negativity.Characterizing Fermionic Non-Gaussianity in the Sachdev-Ye-Kitaev Model via Replica Twist Entropy
Understanding the non-equilibrium dynamics of quantum many-body systems plays a central role in modern many-body physics.Inequivalent Quantum Resources from Multipartite State Discrimination
Any two orthogonal quantum states can be perfectly distinguished via local operations and classical communication (LOCC), yet whether all orthogonal multipartite pairs incur an identical operational…Collusion-Secure Semi-Quantum Secret Sharing Scheme using a Quantum Third Party
The security of a secret sharing protocol is compromised if one or more dishonest participants can reconstruct the secret by deviating from the prescribed protocol, particularly when such malicious…Engineering of Chirped Apodized Sources for Quantum Spectroscopy
Quantum sources of light are of paramount importance for the development of photonic quantum technologies.