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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Linear-time erasure recovery for quantum expander codes
Erasures are used to model faults at a subset of known locations in various platforms used to construct fault-tolerant quantum computers.GFlowQEC: Generative Flow Networks that Learn to Sample Quantum LDPC Codes
Choosing a quantum error-correcting code for a real device means scoring candidates with circuit-level simulations so slow that only a few hundred can be run.Quantum Algorithms for Molecular Response Functions: Resolvent Kernels, Time-Domain Sampling, Query Lower Bounds with Matched Single-Point Calibers, and a Six-Route Comparison
Quantum algorithms for molecular response functions have mostly been studied one route at a time, most prominently the indicator-binning algorithm of Kharazi et al. We compare six routes within one…Optimal Holding Times for Entanglement Swapping
We revisit the optimization of entanglement holding times in memory-based quantum repeaters for maximizing entanglement swapping throughput under different fidelity constraints - strict…Probing gravity at megahertz frequencies with levitated rotors
The near-field gravitational interaction between masses is always thought of as instantaneous, an assumption experimentally tested only up to 1.7 kHz, where measurements yield a bounds at the…3D Printed Monolithic Optomechanical Chassis for an Unbalanced Field-Widened Interferometer
Additive manufacturing is increasingly being explored as an approach for producing complex structures for optical hardware.Arithmetic Depth, Minimal Gate Alphabets, and Exact Program-State Resources for Single-Qubit Dyadic Programs
Resource analyses for quantum programs commonly provide safe upper bounds on qubits, gates, or non-Clifford operations.Using topology to reveal all mutually unbiased bases in dimension six
Mutually unbiased bases (MUBs) describe complementary quantum measurements: certainty in one basis gives no information about the others.Physical regimes of quartic quantum advantage in elastic media simulation
Quantum algorithms for elastic media simulation have been conjectured to offer up to a quartic quantum advantage over classical methods; however, the devil is always in the details.FNO-Based Inverse Co-Design of Semiconducting Quantum-Dot Devices
Gate-defined semiconductor quantum dots are promising building blocks for scalable spin-based quantum processors, however their operational properties depend on several fabrication and control…All Bell inequalities with a quantum advantage in the minimal scenario are self-testing
In the minimal Bell scenario, all extremal quantum correlations are known, but the Tsirelson inequalities that delimit the quantum set remain poorly understood.Multipartite Entanglement, TQFT Partition Functions and PL Bordism
In a previous work we conjectured that the multi-invariants of the ground state of a gapped $(d-1)+1$-dimensional system, labeled by bipartite $(d+1)$-edge-colored graphs encoding closed oriented…Nonlocal magic of fermions is bounded by entanglement fluctuations and is logarithmic for free fermions
Free-fermion states are classically simulable, yet, written as qubits, they typically carry extensive magic, the quantum resource that stabilizer circuits lack.On Entanglement Dynamics in Holographic Theories
Entanglement entropy (EE) is central to modern theoretical physics, yet its calculation in interacting theories with nontrivial time dependence remains challenging.Constraint Variance Identity and the Matter-Geometry Fluctuation Relation
The quantum Hamiltonian constraint vanishes for physical states.Threshold-Free Symmetry-Enriched Topological Quantum Memory
We show that non-Abelian symmetry enrichment can protect a toric code memory against incoherent electric noise at any bond error probability $p\in[0,1]$.Single-shot ground-state preparation via strongly coupled baths
Preparing ground and thermal states of quantum many-body systems is a central task in quantum simulation.Agnostic and efficient detection of $\mathbb{Z}_2$ symmetry-protected topological phases in projected entangled-pair states
Symmetry-protected topological (SPT) phases are the simplest example of quantum phases that cannot be detected by local order parameters.Ground-State Dressing and Delayed Feedback of a Chiral Giant Atom in Ultrastrong Waveguide QED
We study a chiral giant atom ultrastrongly coupled to a one-dimensional waveguide at two spatially separated points.Coherent detector responses to quantum-controlled spherical-shell geometries
A detector inside a static spherical shell samples globally matched field modes even though its local geometry is flat.