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 32
Tunable Three-Body Interactions in Microwave-Shielded Polar Molecules
We show that microwave shielding, which enables collisionally stable ultracold polar molecules, also leads to genuine nonadditive three-body interactions comparable to the shielding interaction…Preparation of a Laughlin-like fractional Chern insulator on a superconducting quantum processor
Fractional Chern insulators (FCIs) are lattice analogues of fractional quantum Hall states, hosting topological order and fractionalized anyonic excitations.Vacuum amplification across a programmable bosonic Bogoliubov stability boundary in a trapped-ion chain
A quantum oscillator always carries vacuum fluctuations, and modulating its parameters converts them into correlated pairs of real quanta.Rényi-2 entanglement of purification of the symmetric Werner state
This paper determines exactly the Rényi-2 entanglement of purification of the normalized symmetric Werner state in every local dimension $d\ge2$ \begin{equation*}…All Paths All at Once: A Quantum Monte Carlo and Neural Committor Approach to Reaction Pathway Search
Locating competing reaction pathways is difficult when potential-energy gradients are unavailable.A Coherent Neutron-Nucleus Hybrid System Mediated by the Strong Interaction
A coherent ensemble of polarized helium-3 nuclei and free neutrons are coupled, forming a neutron-nucleus hybrid system.Experimental Observation of Error-Resilience Phase Transition on Superconducting Quantum Processor
Random unitaries scramble quantum information into highly nonlocal degrees of freedom, thereby providing protection from local noise.Quantum advantage by designing beneficial dissipation from lossless dynamics
Passive loss removes probability from a system and therefore seems unable to improve an unconditional target.Ancilla-free randomized Toffoli gates and the T-count of Boolean oracles
In fault-tolerant Clifford+T circuits, a Boolean oracle costs T gates and extra qubits, and on four or more qubits every exact Toffoli gate needs an extra qubit.Barren Plateaus in Quantum Linear Combinations: Interference and Lie-Algebraic Control
A coherent sum of quantum circuits introduces interference that can alter the training signal.Noise Propagation and Effective Channels in Encrypted Quantum Cloning
We investigate noise propagation in encrypted quantum cloning by formulating the protocol in terms of effective recovery channels.Active Approach to Fast Quantum State Preparation and Reset in Atomic Arrays
Rapid preparation of a target quantum state and reset to the many-body ground state are essential for quantum information processing.Maximally-Matched Mixture Decoding for Correlated Atom Loss in Quantum LDPC Codes
Heralded atom loss is a dominant noise channel in neutral atom quantum computing platforms, and losses at a two-qubit gate are strongly correlated: when one atom is lost, its gate partner is often…Schur--Weyl Reduction of Finite-Copy Precision Bounds for Multiparameter Quantum Estimation
In multiparameter quantum estimation, incompatible measurements can impose trade-offs among estimation errors.Strict Frequency Bandwidths from Causal Light Cones Enable Scalable Exact Gradient Evaluation in Quantum Optimization
Dynamical locality is often regarded as a limitation of shallow quantum circuits, yet we show that it can reduce the number of circuit settings required for exact evaluation of gradients with…Time evolution in the multi-component dynamical Keldysh models
We construct a time evolution operator for a dynamical quantum models with a multi-component random Gaussian field characterized by a long correlation time.Einstein Metrics and Quantum Control on Symmetric Tensor Product Quotients
Let $M_n=(\mathrm{PU}(2)^n\rtimes S_n)\backslash\mathrm{PU}(2^n)$ be the space of projective $n$-qubit unitaries modulo local unitaries and permutations of the qubits.Symmetry-Preserving Hierarchical Quantum Approximate Optimization Algorithm with Subproblems Beyond the Qubit Limit
The quantum approximate optimization algorithm (QAOA) is a paradigmatic variational quantum algorithm for combinatorial optimization problems, yet on current quantum devices the available qubit…Quantum change point metrology
We quantify the extra Bayes risk of locating a quantum change point and estimating its amplitude with one measurement.Spectral Reduction Selects the Observable Imprint of Dirac Quantum Geometry
Spectral constraints can alter the observable manifestation of quantum geometry without changing the local eigenspace.