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 84
Photon-stimulated decay of $χ$-matched ancillas causes unheralded bit flips in bosonic codes
Bosonic codes often read out their syndrome with a transmon ancilla whose computational levels $g$ and $f$ have equal parity and matched dispersive shifts: a decay $f\to e$ is then heralded and…Entanglement Sudden Death in Gapped Ground States
Spatial sudden death of entanglement refers to the disappearance of quantum correlations between subsystems after a certain distance called the entanglement length.Enhanced Quantum Metrology via Saddle-Point Scrambling in Phase Space
Nonlinear effects are widely utilized in quantum metrology to enhance measurement precision by leveraging complex dynamical behaviors.Optical Detection of Coherent Nuclear Spin Control in a Molecular System at Room Temperature
Molecular systems with optically addressable electron spins are emerging as versatile quantum sensing platforms, offering tunable qubit properties and molecular-scale spatial control.Architecting Instruction Execution for Scalable Fault-Tolerant Quantum Computing
Scaling fault-tolerant quantum computing (FTQC) requires orchestrating millions of operations continuously across a tightly coupled classical-quantum control stack.Cyclotomic Structure and Exact Recurrences in Floquet Many-Body Quantum Dynamics
Periodically driven quantum systems exhibit a wide range of complex dynamics, including chaos.On the Computational Complexity of Blind Quantum Machine Learning
Can quantum advantages in computational efficiency coexist with quantum advantages in privacy?Programmable Floquet Response for Quantum Sensing
Quantum sensing is typically based on phase accumulation and is therefore fundamentally tied to the coherence time of the sensing system.Bosonic unstructured search: quantum enhancement without entanglement
We consider unstructured search using multimode bosonic quantum systems under energy constraints.Fractional and quantum Latin squares: real solutions of quantum 36 officers problem
A Latin square can be extended by replacing its symbols with probabilities or quantum states.Moving quantum sensors
We investigate whether controlled motion of a quantum sensor offers a metrological advantage in a field-detection task.Error-Corrected QRAM Queries with One-Fault-Tolerant \texttt{CSWAP} Gates
Quantum random-access memory (QRAM) enables coherent queries to classical data.Principles and Techniques for Agentic Research in Experimental Physics
The use of artificial intelligence (AI) in physics research is increasingly common, yet few guidelines exist for its effective use.Revealing topological protection through unprotected operations in a Majorana parity qubit
A recent experiment reported coherent parity oscillations between minimal Kitaev chains, demonstrating a Majorana parity qubit (arXiv:2607.09511).Fermionic non-Gaussianity via computable measures and experimentally accessible bounds
Interacting fermions owe both their non-trivial correlations and their computational power to their departure from Gaussianity.Quantum Reference Frames in terms of Tetrads
We adapt to the context of quantum theory the treatment, familiar in relativity theory, of a reference frame as a tetrad.Observation of Photon Bunching in Broadband Multimode Thermal Light Enabled by Temporal Imaging
Photons emitted by incoherent sources exhibit temporal bunching, a fundamental manifestation of Bose-Einstein statistics first observed by Hanbury Brown and Twiss (HBT).Whither quantum advantage? New classical lower bounds for Max-Cut on large-girth 3-regular graphs
Every 3-regular graph of girth at least $g$ has a cut containing at least a fraction $M_g$ of its edges, and the best rigorous bounds at large girth are $0.912\le \lim_{g\to\infty}M_g \le 0.92386$.Turning a superconducting diode into a Feynman ratchet to realize a nanoscale heat engine
Feynman's ratchet illustrates how work can be extracted from thermal fluctuations in the presence of two heat baths at different temperatures.Quantum Cryptography and Autoformalization in Lean
Quantum key distribution provides secure communication by relying on physics principles and mathematical reasoning.