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 144
First-quantized quantum simulation with non-local potentials by matrix-product-state encoding
Quantum simulations based on first-quantized approaches can offer lower space and gate complexities than second-quantized approaches.Good Quantum Locally Testable Codes from Lossless Cubical Complexes
Sipser and Spielman constructed LDPC codes from either bipartite \emph{spectral} expanders or one-sided \emph{lossless} expanders.Polynomial-time local-unitary equivalence of graph states
Local-unitary (LU) equivalence asks whether two quantum states differ only by independent changes of basis on their qubits.Quantum Krylov Learning
The Hamiltonian of a natural quantum system is usually determined indirectly, by proposing microscopic models and comparing their predicted observables with experiment.Unifying and Extending Strong Simulation of Quantum Circuits
We establish functional aggregate queries (FAQs) as a unifying language for exact classical simulation of quantum circuits.A polynomial-time classical sampler for noisy quantum circuits from statistical mechanics
Developing classical simulation algorithms for noisy quantum circuits is essential to delineating the limits of quantum advantage.Optimal two-mode bosonic loss codes from finite group symmetry
Photon loss is a dominant noise process in bosonic quantum hardware, including superconducting cavities.Electronic Symmetry and Femtosecond Coherence Dynamics of Renner-Teller-Mixed Neutral Vibronic States in Carbon Dioxide
When non-adiabatic coupling mixes electronic states of a molecule, vibronic states of different electronic symmetry become interleaved across the same spectral region.Characterizing unitaries via quasi-process functions
It is well-known that every n-qubit unitary can be decomposed into a product of controlled single-qubit unitaries.Quantum key distribution using generalized contextuality against post-quantum eavesdroppers
Bell nonlocality allows secret key to be certified without trusting the internal operation of the devices, and even against eavesdroppers constrained only by the no-signaling principle.Late-Time Power Laws in Fluorescence Decays: Quantum Decay or Alternative Mechanisms?
In quantum mechanics, the properties of an unstable system are closely related to its corresponding energy distribution.Engineering non-ergodic properties in two dimensional quantum many-body systems
Non-ergodic quantum many-body dynamics offers a route to persistent quantum coherence far from equilibrium, beyond the conventional expectations of thermalizing statistical mechanics.A Hilbert-Space Analogy for Sexual Orientation and Gender Identity
We introduce a finite-dimensional state-space representation of bisexuality in Dirac notation, specify normalized amplitude weights, and analyze the limits of inference from one single observation.Operator-language Feynman rules for driven-dissipative quantum systems: from mean field to non-Gaussian photon correlations
We construct Feynman rules for Lindblad master equations in the operator language of quantum optics: a fixed algebra of elementary operator moves and closed-form propagators for perturbation theory…Quantum Circuit Pruning: From NISQ Architectures to Fault-Tolerant Operations
We present a routing-aware pruning strategy for quantum circuits that selectively removes parametric two-qubit gates whose computational contribution is outweighed by the fidelity cost of their…Smooth perturbation theory and generic Cantor spectrum for multi-dimensional monotone quasiperiodic operators
We consider multi-dimensional quasiperiodic Schrödinger operators with monotone sawtooth-type potentials in the perturbative localization regime.Beyond Feasibility: Finite-Depth Accessibility in Constrained QAOA
Constraint-preserving mixers keep QAOA within a feasible subspace, but feasibility and global mixer connectivity do not determine which feasible configurations are available to a particular shallow…How Superradiance Survives Molecular Noise inside Virus Capsids
Excited organic dyes chemically bound to an icosahedral virus shell can spontaneously synchronize and emit a superradiant burst of light.Negative quasiprobabilities redistribute (and complex ones reduce) the information in unabsorbed photons
Negative Kirkwood--Dirac quasiprobabilities are credited with the quantum advantage of interaction-free measurement and postselected metrology.esQueranto: Differentiable Structured Quantum Light for Automated Scientific Discovery
Uncovering new phenomena in nature requires experiments.