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 66
On the relationship between the POVM framework and the no-signaling hypothesis
The quantum foundations literature contains dozens of "no-signaling" arguments that rely on the Born rule or, more generally, the positive operator-valued measure (POVM) framework to show that the…Chirality-resolved imaging of spin waves with a quantum spin
Spin waves carry their propagation direction in the handedness of their circularly polarized stray field, a property inaccessible to scalar magnetometers.Quantum approximate stochastic combinatorial optimisation
Two-stage stochastic combinatorial optimisation concerns discrete decisions made before all relevant information is known.Quantum-Assisted Unambiguous Discrimination of Pure States with Robustness Bounds
We propose a hybrid quantum-classical framework for the unambiguous discrimination of pure states by combining the noisy intermediate-scale quantum semidefinite program solver (NSS) with the…Encodings and Node Architecture: Lessons from the Fault-Tolerant Distributed Transversal Fanout
An encoding choice specifies the quantum error-correcting code used to encode logical qubits at a given node.Quantum Tsallis Entropy Estimation: Near-Optimal Bounds and High-Precision Improvements
Estimating statistical properties of probability distributions is a fundamental problem in statistics and theoretical computer science.Discrete time crystals and classical logic gates in coupled open Dicke models
We investigate the dynamics of coupled discrete time crystals (DTCs) in the coupled Dicke model or Dicke dimer (DD) with dissipation.Concrete Functions in Private Simultaneous Quantum Messages: Quantum Advantages and Structural Limitations
Private simultaneous quantum messages (PSQM) provide a minimal model of noninteractive secure multiparty quantum computation, yet their communication complexity for concrete functions remains poorly…Nonequilibrium Dynamical Quantum Phase Transitions in the Extended Agassi Model
We investigate dynamical quantum phase transitions (DQPTs) in the extended Agassi model following sudden quenches of same level pairing ($Σ$), monopole-monopole ($χ$) and cross level pairing ($Λ$)…Nonergodicity from Hilbert-Subspace Cloning
We identify a class of nonintegrable quantum many-body systems composed of single Pauli strings that possess an extensive number of noncommuting local conserved quantities and exhibit partial…From quantum emitters to technological platforms: a perspective on semiconductor quantum dots
Photonic quantum technologies are based on controlled photon states.Multiscale Quantum-Classical Simulation of Protein Autoproteolysis in a Million-Atom Membrane Environment
Predicting chemical reactions in biomolecules is challenging because reactive centers are embedded within complex environments that strongly influence their energetics and mechanisms.Liouvillian Non-Invertible Symmetry
Non-invertible symmetries extend conventional symmetries beyond group-like transformations and play an important role in quantum field theory and many-body physics.Sample-Based Quantum Linear Solver and Bounds on Krylov-State Sampling
To solve linear systems $Ax=b$, we propose a sample-based quantum linear solver combining quantum Krylov-state sampling with classical variational diagonalization.Controlled PROP: Theory and Applications to Quantum Circuits
Control is a fundamental concept in quantum and reversible computational models.Exponential-SWAP gate between bosonic motional modes of trapped ions
The exponential-SWAP (eSWAP) gate generates a coherent superposition of identity and SWAP operations, with continuously tunable amplitudes.Anticommuting Displacement Operators, Exact Pauli Algebras,and the Singlet State from the Oscillator Vacuum
We give an explicit construction of a pair of anticommuting Weyl displacement operators for a harmonic oscillator and use bounded functional calculus to obtain exact dichotomic representatives of…Unconditional Quantum PAC Learning Advantage in the Large Error Regime
We establish an unconditional super-polynomial separation between quantum and classical PAC learning of Boolean functions under the uniform distribution in the large error regime.Learning angles for quantum approximate optimization
The Quantum Approximate Optimization Algorithm (QAOA) and its variants are leading algorithms to help solve challenging combinatorial optimization problems.SpinControl: Control Software for Prototyping and Benchmarking of Spin-Qubit Devices and Measurement Protocols
Quantum computers require software to control the states of the qubits.