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 92
Analog quantum simulation of $φ^4$ field theory with a superconducting transmission line
Understanding the dynamics of interacting quantum fields remains a fundamental challenge.2 Fast 2 Surgery: Fast surgery on QLDPC codes with $\tilde{O}(n(k + d))$ space overhead
We show that the fast surgery framework of Baspin-Berent-Cohen can be instantiated using at most $\tilde{O}(n(k + d))$ ancilla qubits, improving on the previously achievable $O(n\cdot k \cdot d)$…Quantum Simulation of a Hyperbolically Driven Quantum System with Superconducting Circuits
Hyperbolic geometry hosts a plethora of exotic quantum phenomena ranging from holographic duality to novel topological phases.Attainable Boundaries versus Operational Equivalence: Dual Benchmarks for the Hierarchical Assessment of Quantum Resources
While conventional quantum resource theories quantify utility relative to an idealized set of free states, practical implementations are confined to a specific supply environment---a framework…A lower bound on the overhead of addressable surgery on sparse stabiliser codes
We show that, for stabilisers codes, there always exists a logical subspace requiring $\tildeΩ(k^2)$ ancillary qubits to be measured with a sparse surgery ancilla.Quantum Magic and the Strong Coupling Constant
The three gauge couplings of the Standard Model (SM) can be parameterized as the fine structure constant $α$, the weak mixing angle $\sin^2θ_w$, and the strong coupling $α_s$.Sub-MHz SWAP spectroscopy of two-level systems in superconducting qubits
An outstanding challenge in superconducting quantum circuits is mitigating loss from two-level system (TLS) defects.Retromorphic Testing of Quantum Compiler Passes
Quantum compilers play a critical role in transforming high-level quantum programs into optimized, hardware-compatible circuits.High-Rate Concatenated Quantum Error-Correcting Codes for Qudits
Qudits provide a larger local Hilbert space than qubits and have recently attracted interest as building blocks for efficient fault-tolerant quantum computation (FTQC).Exact polariton-condensate states via nonlinear Stark coupling
We study a hybrid system of coupled cavities, with or without two-level atoms doped inside.Markov length can diverge in systems whose universal physics is spatially Markovian
Conditional mutual information (CMI) probes spatial non-Markovianity and plays a central role in a recently developed framework for defining mixed-state phases based on local reversibility.Q-Capsule: A Localized Capsule-Based Quantum Neural Architecture for Barren Plateau Mitigation
Variational quantum algorithms are often limited by barren plateaus: gradients vanish as circuit size and depth increase, making quantum neural networks difficult to train.Gap Sensitivity and Bottleneck Migration in Sparse Constraint-Preserving Quantum Annealing
Constraint-preserving exchange drivers allow many coupling graphs that preserve the same feasible sector, but exhibit different minimum gaps along an annealing path.Photonic Chips for Universal Quantum Computing: Retrospective and Prospective
Integrated photonic quantum chips have emerged as a promising platform for realizing fault-tolerant photonic quantum computers.Magnonic cavity-enhanced quantum magnetometry with nitrogen-vacancy centre ensembles
Nitrogen-vacancy (NV) centre ensembles are leading room-temperature magnetometers, but their sensitivity is usually extracted from a single resonance and relies on external microwave and bias-field…When Does Interference Help Learning? Kernel Geometry as a Pre-Experimental Test for Photonic Reservoir Computing
Multi-photon interference is the resource most native to photonic quantum machine learning, yet experiments on photonic reservoirs have reported advantages, null results, and train-only effects.Heisenberg Echo Symmetrization for Gate-Insertion Error Mitigation
Gate insertion (GI) quantum error mitigation replaces involutory gates such as CZ and CX with 2j+1 repetitions of the same gates to nominally amplify noise by the same factor.Minimal Scenarios Witnessing Genuine Multipartite Nonlocality Possibilistically
We study a strong form of genuine multipartite nonlocality (GMNL), where an $n$-partite scenario admits a quantum strategy generating outcomes belonging to a restricted set with certainty, whereas…A note on decoherence in quantum cosmology by thermal perturbations: an open quantum systems approach
We study, within a toy model, how a thermal bath of cosmological perturbations can decohere the minisuperspace degrees of freedom of the universe, treating the perturbations as an environment in the…Quantum annealing of the random transverse-field Ising model in one, two, and three dimensions
Quantum annealing must be sufficiently slow to prevent defect formation.