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 74
Dynamical Decoupling of Nonclassical States in a Biased-Noise Spin Qudit
Encoding quantum information in $d$-dimensional systems (qudits) with $d>2$ offers appealing new directions for resource-efficient quantum computing.Coherent-State Integrals Beyond the Domain of Operator Products
Inserting a resolution of the identity between two operators turns a matrix element of their product into a phase-space integral.Void-Free Through-Glass Vias for Multilayer Surface-Electrode Ion Traps
Through-substrate interconnects are a key technology for scaling surface-electrode ion traps (SEITs) toward large electrode counts and complex architectures.Quantum-enhanced Search for Galactic Dark Photons Using Cat-State Cavities
We present a quantum-enhanced search for the Galactic dark-photon background (GDPB), a relativistic and anisotropic vector field that can be produced by dark-matter decay or annihilation in the…Quantum-enhanced phase interrogation of a fiber-optic strain sensor
Fiber-optic sensors enable high-sensitivity measurements of various physical parameters.Scalable Tomography of Coherent Noise via Stabilizer-Code Polarization
Coherent errors accumulate linearly rather than diffusively, making them invisible to Pauli-twirl-based char- acterization.Acoustic scattering from quantum dynamics
Scattering of sound waves propagating in a compressible fluid is linked to the quantum dynamics generated by a class of non-Hermitian Hamiltonian operators.Trading energy for coherence in mode discrimination
Energy is arguably the main resource in classical physics; coherence is the prototypical quantum resource.Single and coupled quantum van der Pol oscillators: Wigner-function dynamics, exact qutrit solutions, and synchronization
We study quantum van der Pol oscillator in which single-photon pumping competes with a nonlinear two-photon dissipative channel to produce a quantum limit cycle, and the question of how two such…On the structure of low-rank PPT entangled states violating Peres conjecture
Bound-entangled states with positive partial transpose (PPT) can exhibit quantum steering and Bell nonlocality, disproving the long-standing Peres conjecture and its stronger steering counterpart.Quantum Folding in Chebyshev-Based Quantum Subspace Diagonalization
Quantum subspace diagonalization (QSD) with a Krylov space spanned by Chebyshev polynomials of the Hamiltonian is a natural ground-state method for fault-tolerant quantum computers, but every…Majorana Edge Modes Reshape Kibble-Zurek Scaling in Kitaev Honeycomb Ribbons
Recent progress in programmable quantum simulators motivates exact benchmarks for nonequilibrium dynamics in topological quantum matter.Deterministic and Programmable Fusion for Scalable Generation of Photonic Graph States
Entanglement in multiphoton graph states is an important resource with various applications, such as measurement-based quantum computing and memory-less quantum repeaters.Photon Demultiplexing Using Spatial Routing
Spatial sectioning of the far-field noncollinear field from spontaneous parametric down-conversion (SPDC) is a promising approach for multiparty quantum communication.Improved Quantum Algorithms for Rényi Entropies Estimation
Entropy estimation of discrete probability distributions is a fundamental problem in statistical inference and quantum property estimation.Joint-measurement advantage and finite-time transitions in accelerated detector registers
The Unruh response thermalizes accelerated detectors, but the entanglement remaining in a register does not by itself specify what distributed measurements can recover.Observation of correlations beyond the single-particle picture in fermionic counting statistics
The analysis of charge fluctuations in a mesoscopic device can shed light on the fundamental question of whether or not a single-particle picture of electron transport is appropriate, even in the…Testing graph isomorphism using simple quantum circuits
The graph isomorphism problem asks whether two graphs are equivalent up to a permutation of their vertices.Preservation of photon statistics upon selective molecular modulation in hollow-core fibers
Preserving the underlying statistical properties of light during frequency transduction is essential for interfacing spectrally disparate quantum systems.Hyperentanglement in intermediate phase-space planes: benchmarking a photon-pair source for quantum key distribution
We characterize a source of photon pairs simultaneously entangled in polarization and in the transverse spatial degree of freedom, with the spatial measurements performed in intermediate planes of…