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 76
Intermediate memory costs of quantum channel synthesis with a protected subsystem
A quantum memory can preserve a subsystem perfectly while discarding information needed by a later operation.Quantum-Aware Key Rank for Side-Channel Attacks evaluation
Side-channel attacks on block ciphers rarely recover the key outright: they leave a residual key space ordered by subkey posteriors, and evaluation laboratories report the key rank of the true key…Logical CCZ state cultivation
Logical CCZ states enable Toffoli gates, a central building block of fault-tolerant quantum arithmetic.Mechanical trisqueezing in circuit quantum acoustodynamics with SNAIL devices
Continuous-variable quantum information processing with mechanical oscillators requires a uni- versal gate set, including a genuine non-Gaussian evolution.Quantum Partial Information Decompositions, an Operational Order on Ensembles, and Direct Quantifications of Objective Information
The partial information decomposition (PID) framework is an extension of classical information theory that enables a systematic analysis of the structure of information in multipartite systems.Finite-cutoff geometry from double-scaled SYK
We develop a finite-cutoff holographic description of the double-scaled SYK (DSSYK) model.Surviving readout errors and incomplete postselection in monitored quantum circuits
We study how readout errors affect dynamics in monitored quantum circuits.Boundary-induced geometrical frustration in a square Rydberg-atom lattice
We study geometric defects in square-lattice Rydberg-atom arrays induced by lattice-size parity in the striated density-wave phase.Long-lived local coherences at high temperature from frozen domain walls
Local coherences between distinct charge sectors--measured by the single-particle Green's function or the transverse spin autocorrelation function--do not overlap with hydrodynamic modes.Quantum prepare-and-measure scenarios: concepts and methods
Prepare-and-measure scenarios are among the simplest and most widely used settings for quantum communication.Alternating Squeezing and Photon Subtraction for Optical Cat-State Generation
Schrödinger cat states are important non-Gaussian resources for quantum information processing and quantum-enhanced metrology.A constructive solution to the $n$-representability problem
We present an instantiation of the constructive solution to the fermionic quantum marginal problem by building the complete family of two-body witnesses at each level of a weighted sum-of-squares…Schrödinger's unpublished hidden-variable model in the 1944-45 debate over the "Collapse of Determinism"
In the mid-1940s, the question of whether quantum mechanics could be supplemented by deterministic hidden variables resurfaced in a debate in ^textit{Nature}.Standard and Bipolar Rectification in Tilted Periodically-Driven Quantum Systems
Developing mechanisms to control transport in correlated quantum systems is essential for advancing quantum circuit technologies.The Magic Barrier: A Universal Feature of Quantum Thermalization
We show that the emergence of a ``magic barrier'', characterized by a transient maximum of nonstabilizerness during rapid entanglement growth, is a universal feature of thermalization within quantum…The Lovász number is not alone: a continuum of Rényi points in the entanglement-assisted spectrum of graphs
Li and Zuiddam's entanglement-assisted asymptotic spectrum of graphs consists of the normalized graph parameters that are additive under disjoint unions, multiplicative under strong products and…Infinite magic and the emergence of the continuum
Which features of a quantum state are needed for a relativistic quantum field theory to emerge from a lattice system?Sparse-QITE: Discovering Compact Generators for Quantum Imaginary-Time Evolution via Regularization Methods
Quantum imaginary-time evolution (QITE) provides a systematic route to ground-state preparation, but its cost grows rapidly with the locality $D$ of the unitary approximation, for which the local…Collective Organization of String Fragmentation
How coherent confining strings reorganize into hadronic matter is a central open problem in nonequilibrium gauge dynamics.Syndrome-Resolved Decoding of Qubit Readout Errors
Readout errors in superconducting qubits include incorrect state assignment, bit flips within the computational subspace, and leakage to non-computational states.