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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Multivariate quantum signal processing with optimal query complexity
Polynomial transformations of data encoded in quantum operations are a building block of quantum algorithms, and their query complexity measures how often those operations are used.Optimizing quantum error correction through error attribution
Logical error rate is a standard benchmark for quantum error correction, providing an aggregate measure of the overall effect of physical noise.Subdimensional linear-optical quantum computation: from qudit resource states to qubit quantum computation
In this paper, we propose a linear-optical quantum computation scheme that starts from high-dimensionally entangled qudits but performs quantum computation on qubits defined in their subspaces.Fault tolerance of quantum circuits with tensor networks and symplectic geometry
We develop an operator-algebraic framework for analyzing fault tolerance in quantum circuits and establish necessary and sufficient conditions for fault tolerance under any given noise model.Parity-Time Symmetry of Plasma Waves
The susceptibility tensor of a homogeneous collisionless magnetized plasma possesses parity-time (PT) symmetry.An exact semidefinite characterization of the stoquasticity cone of permutationally invariant Bell operators
Bell correlations have been detected in atomic ensembles ranging from hundreds to hundreds of thousands of particles, witnessed by the permutationally invariant (PI) Bell operators.Geometric Aspects of Entanglement
Quantum entanglement is a fundamental resource in quantum information theory, yet its general characterization and quantification remain challenging, especially in multipartite systems.Generalization of Transformer-Based Neural Quantum States via In-Context Learning
Neural quantum states based on modern deep learning architectures have emerged as powerful representations for quantum many-body systems.Efficient Sampling for Many-Body Fermionic Non-Gaussianity
Fermionic non-Gaussianity is a key resource for universal quantum computation, and its behavior in quantum many-body systems has attracted growing interest.Mode-tunable inter-core coupling of photon-number-resolved quantum light in a telecom multicore fiber
Multicore optical fibers (MCFs), developed to scale classical telecommunications, are gaining traction as a quantum platform for high-dimensional key distribution, entanglement, and photonic quantum…Opportunistic full reconstruction of 100-dimensional frequency-bin quantum states
Frequency-bin encoding provides a scalable platform for photonic quantum information processing by enabling high-dimensional qudit states compatible with the telecommunications infrastructure.Born rule in Schroedinger-Newton scenarios of semiclassical gravity
We investigate dynamical relaxation to the Born rule in a semiclassical gravity model described by the Schrödinger-Newton equations.Breaking the chain: geometry-native state preparation with ASPIRE
Loading data into quantum computers is a key bottleneck that threatens end-to-end quantum advantage.What Must a Quantum-Memory Decoder Know About Temporally Correlated Noise?
What must a quantum error-correction decoder know about temporally correlated noise, and what does it cost to learn?A graph-theoretic analysis of non-generic free-fermion solvability by Krylov decompositions
Exactly solvable models are often identified from structural features of their interactions.Gibbs state preparation through quantum decoding
We propose a Gibbs state preparation algorithm that exploits algebraic structure in the Hamiltonian.Rapid mixing of Gibbs samplers via quantum Dobrushin--Shlosman conditions
Classical Dobrushin--Shlosman theory uses heat-bath block updates to identify sharp temperature thresholds for establishing the rapid mixing of Gibbs samplers.From Symmetry to Secrecy: Covariant Classical--Quantum Wiretap Channels
For classical--quantum wiretap channels with a transitive covariant input action, both output ensembles admit a description as unitary group orbits of fixed seed states.Quantum algorithms for orthogonal polynomial transforms
A quantum orthogonal polynomial transform (QOPT) is an algorithmic primitive that maps a superposition of standard basis states $\sum_k α_{k} \ket{k}$ coherently to a basis of normalized univariate…Robustness of quantum spectrum estimation: weak Schur sampling under noisy inputs
We initiate the study of weak Schur sampling (WSS) under noisy inputs.