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 112
Analytic construction of dimension-dependent steering witnesses from generalized equiangular measurements
We construct a dimension-dependent family of generalized equiangular measurements that gives explicit steering witnesses in every prime dimension $d\geq5$.Advantage of Entangled Learning Rules in Quantum Measurement Class Learning
Learning with data in the form of quantum states is of current interest and has led to a variety of problems that boil down to interaction with the available data via quantum measurement and…Classical chaotic signatures in Krylov space
In recent years, Krylov space approaches have emerged as a useful framework for characterizing dynamical chaos in a wide variety of physical systems.Benchmarking exchange-only control of a 48-spin singlet manifold
Exchange-only quantum computing benefits from high fidelity and straightforward control afforded by the exchange interaction.White paper: 1-10 Hz matter-wave interferometer to test the spin entanglement witness for quantum gravity
In this white paper, we highlight the importance of the ($1-10~{\rm Hz}$) frequency range for laboratory tests of the quantum nature of gravity using the quantum gravity-induced entanglement of…Quantum Algorithms for Finding Vacua in the ADK Landscape
We study quantum algorithms for finding a vacuum with a small cosmological constant in the toy model for string Landscape proposed by Arkani-Hamed, Dimopoulos, and Kachru.Coupled cluster theory for multireference and open-shell molecules
We introduce a simple coupled cluster approach for multireference and open-shell systems.X2C-inspired approximation of the Dirac coupling operator in a multiwavelet basis
We present a method to obtain the proven exact 2-component (X2C) method, normally applied to Gaussian-type fixed Hilbert bases, in an adaptative non-uniform grid basis of the Hilbert space, namely…Sidewall spacer passivated epitaxial NbN/AlN/NbN Josephson junctions for superconducting qubit applications
Epitaxial NbN/AlN/NbN Josephson junctions are promising alternatives to conventional Al/AlO$_x$/Al junctions for superconducting qubits due to their crystalline tunnel barriers and the high…Epitaxial NbN-junction-based self-shunted superconducting flux qubit with high anharmonicity
We report a demonstration of a self-shunted superconducting flux qubit (SSFQ) as an ultracompact, strongly anharmonic, and long-lifetime qubit by using the full epitaxially grown NbN/AlN/NbN…Entanglement-of-formation potentials for feedback-assisted classical communication and randomness distillation
We develop entanglement-of-formation potentials for feedback-assisted classical communication and one-way randomness distillation.Quantum codes in the Lee metric
We introduce a quantum coding framework for discrete small-shift noise, in which errors on qudits are modeled as low-weight $X$- and $Z$-type Pauli shifts, analogous to small phase-space…Long-lived Coherent Phonons Reveal Competing Thermal and Many-Body Dynamics in $α$-In$_{2}$Se$_{3}$
The fate of quantum coherence following photoexcitation is a central problem in nonequilibrium condensed-matter physics, especially in low-dimensional solids where electronic, structural and…WLPA: A Network Management Framework for Allocating Scarce Quantum-Safe Link Postures under Weakest-Link Exposure
Network operators migrating distributed systems to post-quantum and quantum-safe cryptography face a resource-management problem: quantum key distribution (QKD) gives the strongest guarantee…Custom Penalty QAOA via Walsh-Hadamard Transform
Inequality constraints in combinatorial optimization are conventionally handled by introducing slack variables and quadratic penalties, which increase the qubit count and distort the optimization…Pairwise detection, chiral conversion: Resource theory of quantum multistates
Basis-independent coherence of a quantum multistate is fixed by whether its constituent states commute, and for qubits it is detected by pairwise state overlaps alone.Gap Amplification for Local Hamiltonians with Combinatorial Soundness
The quantum PCP conjecture is one of the major open problems in quantum complexity theory.Hamiltonian Metric Learning and Energy-Based Training: A Dissipative Geometric Framework for Optimization
Optimization in machine learning is usually expressed through iterative rules that update model parameters using information from the loss landscape.Improved Upper and Lower Bounds for Quantum Convex-Body Volume Estimation
Estimating the volume of a high-dimensional convex body is a fundamental problem in theoretical computer science.Blind Remote Implementation of Arbitrary Two-Qubit Unitary Operation via Pre-Shared Entanglement
We propose a protocol for the remote implementation of an arbitrary two-qubit unitary operation using pre-shared entanglement.