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 17
Lee-Yang theorems for $q$-deformed oscillators and doubly-scaled SYK
We show that the vacuum partition function of the $q$-deformed oscillator \[ L_q(z):= \langle0|e^{zT_q}|0\rangle, \qquad T_q := \mathsf{a}_q + \mathsf{a}_q^* \] satisfies the Lee-Yang property…Mutual information to all orders from modular flow: a replica-free approach
We derive an all-orders long-distance expansion of vacuum mutual information between two disjoint balls in generic $d$-dimensional CFTs.Quantum channel tomography: optimal bounds in the near-boundary regime
Quantum channel tomography (also known as quantum process tomography) is a fundamental task in quantum information and quantum computing, aiming to learn the full description of an unknown quantum…Optimised finite key for satellite up-link entangled quantum key distribution
Entanglement-based quantum key distribution from ground to satellite has been proposed as a scalable primitive for global quantum networks and will be demonstrated as part of the imminent QEYSSat…Long-range entangled criticality from coherent errors
We find that coherent error can induce a phase transition from the clean surface code phase into an extended long-range entangled critical regime with diverging Markov length.Reconstruction of the conformal algebra from a critical groundstate on the (fuzzy) sphere
Recently, we found a method to reconstruct the dilatation operator (sphere Hamiltonian) from a regulated conformal field theory groundstate.Entanglement-Aware Quantum Circuit Optimization through Globally Optimal Partitioning
We introduce a scalable framework for globally optimal quantum-circuit partitioning and entanglement-aware block resynthesis.High-fidelity quantum gate learning via physics-informed neural networks
We propose a physics-informed neural network (PINN) approach for high-fidelity quantum gate learning in both one- and two-qubit systems.Factorized approximate inverse preconditioners in the tensor train format
We present a preconditioning pipeline that accelerates Tensor Train (TT) linear solvers for symmetric positive-definite problems.Liouvillian Kramers Degeneracy
The Kramers theorem generally guarantees the spectral degeneracy of time-reversal-invariant Hamiltonian operators with half-integer spin, underlying a variety of physical phenomena.Hardware-Aware Design and Layout Selection in Quantum Reservoir Computing for Insurance Claims Forecasting
Quantum reservoir computing (QRC) processes temporal information through quantum dynamics, but it remains unclear whether small QRC models can forecast real data competitively with classical models…Unital qubit channels are $3$-noisy
The algebraic and environmental characteristics of mixed unitary quantum operations are investigated.Analog quantum simulation of paraparticle statistics
Bosonic and fermionic quantum statistics describe all known elementary and emergent particles in three dimensions, although many attempts have been made to discover other valid quantum statistical…Non-Hermitian effective dynamics from post-selection protocols
Multiple seemingly distinct frameworks are commonly proposed to explain the emergence of effective non-Hermitian dynamics in quantum systems coupled to an environment.Pump quantization changes optimal measurements for quantum sensing
Standard analyses of quantum phase sensing often neglect the overhead of generating squeezed-light by treating the pump as an undepleted classical resource.Parametrization of unitary matrices, parametrizing the symmetric $S$ matrix and the $NN$ $S$ matrix above the inelastic threshold
None of the $S$-matrix representations used in analyses of nucleon-nucleon ($NN$) scattering above the inelastic threshold is implicitly unitary, general, and connected to low-energy (Stapp)…The Impact of Internal Electric Fields on Accurate Diamond Magnetometry
Nitrogen-vacancy (NV) center spin ensembles are a promising platform for accurate vector magnetometry, as they offer measurements referenced to a spin Hamiltonian in an anisotropic crystal with…Adaptive Qubit Encoding for Continuous-Variable Quantum Optimization
Optimizing continuous-variable functions on qubit-based quantum hardware requires a finite representation of the search space and a solver-compatible representation of the objective function.Tight Quasiprobabilistic Entropic Uncertainty Relations for Discrete Quantum Systems
It was conjectured by Wehrl and proven by Lieb that the Shannon differential entropy of the Husimi function of a continuous-variable quantum state is lower bounded by the value it takes on coherent…Interaction-driven Weyl superfluids from topologically trivial bands in an optical Raman lattice
We propose a scheme to realize Weyl superfluidity from topologically trivial bands in the strongly correlated regime of a three-dimensional optical Raman lattice.