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 148
Scanless quantum Fourier-transform mid-infrared spectroscopy for solids and surface analysis
Quantum infrared (IR) spectroscopy is a novel technique based on nonlinear interferometry and quantum sensing with undetected photons.Parametric DRAG for leakage-suppressed exchange gates in superconducting qubits
Programmable exchange interactions support quantum gates and many-body simulation in superconducting circuits.A magnetic-field insensitive gate set for trapped-ion nuclear spin qubits
We outline a complete set of operations for manipulating nuclear spin qubits of trapped-ions stored in high magnetic fields such as required for Penning trapping, where the nuclear and electron…A Memory-Magic Exchange Law in Streaming Clifford+T Compilation
A phase that reaches a fault-tolerant processor in additive pieces can be remembered until the last piece arrives, or executed on arrival: the first option costs classical memory carried across…Consistent histories and the ultrametric on infinite tensor products
The consistent histories formulation of quantum mechanics assigns classical probabilities to sequences of coarse-grained events when the corresponding interference terms vanish.Succinct Arguments for QMA in the Quantum Random Oracle Model
Succinct arguments are a fundamental cryptographic primitive for verifying computational claims with small communication.Experimental certification of multipartite Bell correlations using only few-body symmetric correlations
Certifying Bell correlations in increasingly larger multipartite quantum systems is challenging because conventional Bell inequalities rely on many-body correlations, which become experimentally…Exact anomalous current fluctuations in the strong-anisotropy limit of the XXZ chain
We study spin-current fluctuations of the folded XXZ chain, which describes the strong-anisotropy limit of the XXZ chain.Multi-Parameter Error Mitigation in Parametric Down-Conversion via SU(1, 1) Composite Segmentation
Spontaneous parametric down-conversion is a primary resource for generating non-classical light, yet phase mismatch fluctuations from temperature drift, angular misalignment, and domain fabrication…Asymptotic Pseudospectra in Dissipative Floquet Quantum Systems: Geometric Structures and Observable Dynamics
In periodically driven open quantum systems, nonnormality renders the Floquet spectrum insufficient as the system approaches the thermodynamic limit, so that pseudospectra are needed to characterize…Digital quantum state preparation by nucleation
Quantum state preparation is crucial for quantum algorithms, and improved state preparation methods can reduce resource requirements by orders of magnitude.Quantum Statistical Thermal Engine at the BCS-BEC crossover
We propose a quantum heat engine based on a two-component Fermi gas with s-wave contact interaction, operating across the BCS-BEC crossover.Semiclassical spin-bath calculation of the nitrogen-isotope effect on NV$^-$ ensemble coherence in diamond
The ratio $T_2$/$T_2^*$ of the Hahn-echo and Ramsey times of nitrogen-vacancy (NV$^-$) ensembles is independent of the nitrogen concentration [N] and is $\approx$ 16 in diamond of natural isotopic…Optimal interferometric certification of multi-photon indistinguishability
Multiphoton indistinguishability is a key resource for photonic quantum technologies, yet its characterization typically relies on resource-intensive methods.Operational theory for photonic circuits: generalizing linear optics beyond quantum theory
We use the analogy between the quadrature operators in quantum optics and the phase-space coordinates in a mechanical harmonic oscillator to generalise the theory of linear optics beyond quantum…Adaptive decoding of quantum LDPC codes through decoder disagreement
Accurate decoding of quantum low-density parity-check (qLDPC) codes often relies on expensive post-processing search, although decoding difficulty varies strongly between syndromes.Resonance Breaking in Noisy Shor's Algorithm
We argue that the exponential quantum advantage in Shor's algorithm is broken under one-layer depolarizing noise of arbitrary small error rate, by analyzing a resonance breaking phenomenon in noisy…Integrated balanced homodyne detector using CMOS capacitive-feedback TIA for quantum measurements
A low-noise, high-speed balanced homodyne detector is demonstrated, combining a capacitive-feedback transimpedance amplifier implemented in 28 nm CMOS with a custom photonic integrated circuit…Constant-rate quantum codes with low-weight stabilizers and full logical Clifford actions via transversal and fold-transversal gates
Low-space-overhead fault-tolerant quantum computation requires not only high-rate quantum error-correcting codes but also space-efficient implementations of logical operations.Foundation Neural-Network Quantum States for Molecular Potential Energy Surfaces in Second Quantization
Second-quantized neural-network quantum states have achieved accurate molecular energies, but extending them across molecular geometries requires a shared representation of the geometry-dependent…