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 14
Quantum theory of damping: A new approach to temporal evolution of density operator without the rotating wave approximation
The Lindblad master equation is the standard framework for describing dissipative dynamics of the open quantum system context.Higher-order quantum information inequalities and error-correction of non-Markovian noise
Defining entropy of a quantum channel has become a challenge with potential candidates recently reported in literature.SPAM-robust learnability of quantum dynamics
Accurate characterization of quantum dynamics is essential for the calibration and control of quantum devices.Multipartite entanglement swapping with homodyne and single photon detection
Establishing multipartite entanglement across lossy optical networks remains a central challenge for distributed quantum information processing.Quantum resource trade-offs of mixed sparse single and double factorization for qubitization-based phase estimation
We study a mixed block encoding of quantum-chemistry Hamiltonians for quantum phase estimation (QPE) on fault-tolerant quantum computers.A Study of Fluctuation Growths of Observables in Open Quantum Systems
The rate at which quantum fluctuations of observables can change provides a useful characterization of the dynamical behavior of quantum systems.Tensor-network simulation of strongly coupled multi-fluxonium circuits
Designing a superconducting quantum processor rests on predicting the low-lying spectrum of its coupled circuit.Efficient training of a 128-modes 3D continuously coupled photonic chip via limited quantum resources
Integrated photonics provides a promising route towards the development of large-scale, stable and low-loss quantum hardware.Dynamical Signatures of Selective Gap Closing in Multi-Dimensional Monotone Quasiperiodic Operators
We translate the spectral gap-closing criterion for multi-dimensional monotone quasiperiodic Schrödinger operators into a concrete dynamical protocol and verify it by large-scale numerics.Exact Mirror-Parity Selection Rule for Electron-Phonon Coupling in Two-Dimensional Crystals
The electron--phonon (e-ph) interaction underlies conventional superconductivity and plays a central role in transport and other many-body phenomena in solids.Trinetra.Q: Statistical and Behavioral Detection of Attacks on the Quantum-Error-Correction Layer and Classical Control Stack of Quantum Computing Systems
Most quantum-computer security work targets physical-layer attacks on qubits, while two surfaces remain inadequately defended: the quantum-error-correction (QEC) syndrome-and-decoder pipeline, and…The most entangled states of four and seven qubits
Pure states of four and seven qubits cannot be maximally entangled across every balanced bipartition; we determine how entangled they can be on average.Achievability of CSS codes performance limits over Pauli channels under separate ML decoding with bounded graphical complexity
Capacity-approaching quantum error correction faces a fundamental tension: the required parity-check matrices need to become increasingly dense, while practical decoding and syndrome extraction…MBUndo: Sound, Automatic, and Efficient Measurement-Based Uncomputation for Quantum Circuits
Quantum programs that use temporary values, known as \emph{ancilla} qubits, must explicitly \emph{uncompute} each ancilla back to zero to ensure that the program produces correct outputs.Quantum simulation of dissipative acoustic and elastic waves by Schrödingerisation: absorbing boundaries and explicit polynomial-size circuits
Explicit quantum circuits for the acoustic and elastic wave equations, obtained by Hamiltonian simulation of their first-order forms, conserve energy and therefore describe closed domains: an…State Synthesis with an NP oracle
In this note, I describe a quantum algorithm that prepares an arbitrary state $|ψ\rangle$ to inverse exponential precision in polynomial time by making queries to an $\mathsf{NP}$ oracle, assuming…Nearly Transform-Limited Pulse-Like Temporal and Narrowband Spectral Responses in Sum-Frequency Generation from Bright Twin Beams
We simultaneously characterize the temporal and spectral responses of the coherent component in bright twin beams using a spectrally resolved, delay-dependent sum-frequency generation (SFG)…Finite attainment and efficient computation of regularized quantum channel relative entropy
Quantum channel relative entropy can be nonadditive, making its regularization essential for asymptotic analysis.Barycentric programming: Classical realization of programs for universal quantum processors
A programmable quantum processor implements a target unitary using information stored in a classical or quantum program register.Logarithmic Bias of Zero-Noise Extrapolation under 1/f Noise
Zero-noise extrapolation estimates ideal quantum observables by amplifying noise and extrapolating the measured response.