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 145
Conditioning on Subalgebras - Entropy Duality and Generalized Quantum Stein's Lemma in von Neumann Algebras
We establish duality relations for conditional entropies relative to subalgebras of arbitrary von Neumann algebras, including the Umegaki relative entropy as well as the sandwiched- and Petz-Rényi…Real-Time Adaptive Filtering and the Boxcar Limit in Superconducting Qubit Readout
Control and readout systems for superconducting quantum computing support real-time control and high-fidelity qubit-state discrimination.Thermal entanglement transitions from strong $\textrm{SU}(2)$ symmetry
We study mixed-state entanglement in Gibbs states with strong $\mathrm{SU}(2)$ symmetry, focusing on locally interacting spin systems with ferromagnetic interactions.Remote state preparation of a single-spin state via hybrid spin-photon entanglement
Remote state preparation is a fundamental quantum-information protocol that exploits prior knowledge of a target state to reduce the communication resources required for quantum-state distribution.Neural Fourier Surrogates for Data Reuploading Quantum Neural Networks
For quantum machine learning, the exact boundary between classical and quantum advantage is still poorly understood.The Quantum Sphere: A Physically Realizable Optimization Benchmark with Provable Linear Convergence in White- and Black-Box Settings
We revisit an established Quantum Control objective, characterize its exact local metric geometry, and reposition it as a rigorous benchmark for Search and Optimization.Dynamical resource theory of time-reversal symmetry breaking
Time-reversal symmetry and its violation (T-violation) are fundamental across diverse physics domains, from particle physics to fluctuation theorems and reciprocity.Transverse momentum as the counter-diabatic generator in bent waveguide couplers
Bending the axis of a mode-evolution coupler suppresses the nonadiabatic coupling between its supermodes, and bent couplers of this kind were recently shown to realize the counter-diabatic (CD)…Degree Balance as a Fine-Grained Complexity Boundary for Quantum SAT
The local Hamiltonian problem is the canonical $\mathsf{QMA}$-complete problem, and $O(2^n)$ time classical algorithms and $O(2^{n/2})$ time quantum algorithms are known to solve the problem in the…Crossover of Scaling Behaviors of Work Cumulants in a Driven Gaussian Field Theory
We derive the finite-temperature characteristic function of work (CFW) for a driven $O(N)$ Gaussian field theory and obtain closed-form expressions for all zero-temperature excess-work cumulants.Quantum Computing for Network Security Classification: Near-Term Classification and Long-Term Memory Efficiency
Quantum computing has already been explored in several network-security applications.Improved Quantum Algorithms for Black-Box Abelian Group Decomposition
Decomposing finite Abelian black-box groups into cyclic factors is a basic problem in quantum computation.Evanescent-wave Johnson Noise from Superconductors
We compute the evanescent-wave Johnson noise (EWJN) in the vacuum half-space above a superconductor, and the resulting relaxation time ($T_1$) of spin and charge qubits placed at nanometer distances…Affine spin-pencil factorization of generalized driven anisotropic Rabi--Stark Hamiltonians in an inhomogeneous orthosymplectic superalgebra
We construct a supersymmetric factorization for generalized driven anisotropic Rabi--Stark Hamiltonians using an affine factor $\hat{A}=\hat{C}+\hat{a}\hat{D}$ in an inhomogeneous orthosymplectic…Exponential Advantage of Quantum over Classical References in Leakage Detection
Leakage from a known encoding subspace can be detected by projection.Emergent Symmetries in Ensemble Averages
It is widely believed that there are no exact global symmetries in quantum gravity.Multicomponent anyons in one-dimensional optical lattices
We investigate the ground-state and dynamical properties of multicomponent interacting anyons confined in a one-dimensional (1D) optical lattice.Generalized Effective Spin-Chain formalism for multicomponent anyons in one-dimensional optical lattices
We develop a generalized effective spin-chain (GESC) formalism for strongly interacting multicomponent anyons in a one-dimensional (1D) optical lattice.Factorization dynamics between quantum Fisher information and quantum coherence
Quantum Fisher information (QFI) quantifies the sensitivity of a quantum state to a parameter change and plays a key role in quantum metrology.Shared Phase Arithmetic for Parallel Quantum Rotations
A layer of diagonal quantum gates can be specified by an integer-valued function on computational basis states.