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 55
Extreme competition between stripes and superconductivity in the hole-doped Hubbard model
The two-dimensional Hubbard model was originally proposed as the minimal model of uniform $d$-wave superconductivity in the cuprate high-temperature superconductors, but recent calculations with…Delta-Doped GeV$^-$ in diamond with isotope resolvable optical spectra
Group IV color centers in diamond -- silicon, germanium, tin, and lead-vacancy centers -- are a promising platform for quantum networking.Memory--Transport Competition in Physical Two-Bath Quantum Reset Dynamics
Coherence preservation and environmental renewal offer competing ways of controlling quantum memory and transport.Distributed dual-comb spectroscopy
We propose distributed dual-comb spectroscopy, a quantum-enhanced sensing architecture that simultaneously exploits spatial- and spectral-domain entanglement to improve the extraction of global…Photon localization: Local measurements, localized states, and causality
We review what it means for a relativistic particle to be localized and argue that the most useful approach is through local measurement.On the Role of Problem Structure in Single-Layer QAOA
Problem structure is regarded as a key factor influencing the performance of the Quantum Approximate Optimization Algorithm (QAOA), yet it remains an informal notion without a precise mathematical…Finite-width altermagnetic quantum rings: angular-channel hybridization and Aharonov--Bohm physics
We study a finite-width two-dimensional quantum ring with a quadratic $d$-wave altermagnetic term, Tan--Inkson confinement, a perpendicular magnetic field, and independently tunable Aharonov--Bohm…Quantum algorithm for high-dimensional nonlinear stochastic differential equations based on Carleman linearization
Addressing nonlinear numerical problems in quantum computing remains challenging, but several approaches, including Carleman linearization (CL), have been proposed to construct quantum algorithms…Field demonstration of a self-contained 10 km mobile-to-ground quantum network node via common-aperture co-propagation
In this work, we demonstrate a dual-function, common-aperture free-space optical system that simultaneously supports decoy-state BB84 quantum key distribution (QKD) at 803 nm and bidirectional…Steering of topological criticality in the Su-Schrieffer-Heeger chain via non-Hermitian substitutional impurities
We investigate the topological phase in a one-dimensional Su-Schrieffer-Heeger (SSH) chain in the presence of a finite concentration of non-Hermitian substitutional impurities.Systematic Truncated Wigner Approximation for Open Spin Systems Reveals Long-Range Order Far from Equilibrium
Long-range interactions can protect dissipative order against fluctuations, but determining when they do so in two dimensions remains out of reach for existing many-body methods.Engineering \(XY\) and \(ZZ\) interactions between two remote superconducting qubits via a multimode waveguide
Waveguides provide a flexible platform for long-range interactions between superconducting qubits.Quantum Cryptanalysis on Two Feistel-Type Constructions
With the rapid advancement of quantum computing, the security of traditional cryptographic systems is facing significant challenges.Collision-aware Bayesian mitigation of photon loss in linear optical quantum circuits
Photon loss is the dominant noise source in linear optical quantum circuits.Low-nonlinearity advantage of hollow-core fiber for wavelength multiplexing of quantum entanglement and classical DWDM signals
Coexistence of classical and quantum light in optical fiber is a key requirement for scalable quantum networks.Hybrid Lattice Surgery between Smooth Boundaries
We develop smooth hybrid lattice surgery for group surface codes, enabling joint logical measurements through merge and split operations along smooth boundaries.Microscopic Bipartition and Macroscopic Symmetry in a Rényi Entanglement Ensemble
Universal information extracted from entanglement at a critical point is commonly associated with the long-distance properties of the bulk state, while microscopic details of a lattice bipartition…Fate of Discrete Time Crystals in Finite-Size Cavity QED Systems
It has been shown that Discrete Time Crystal (DTC) behavior may arise in the periodically driven, open Dicke model in the thermodynamic limit ($N \rightarrow \infty$).Stabilizer Rényi moments beyond entanglement
Stabilizer Rényi moments depend on a choice of operator basis and need not be determined by entanglement spectra.Resolving Nonlocal State Reduction via Induced Coherence in Frequency-Comb Biphoton Sources
How macroscopic definite outcomes and nonlocal correlations emerge from entangled superpositions across spacelike-separated regions without superluminal action or {\it ad hoc} wavefunction collapse…