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 24
Scaling laws of entanglement entropy in fractal dimensions
Entanglement entropy scaling links geometry to quantum correlations and diagnoses quantum criticality.Chiral Torsional Double Wells: Tunneling and Polarizability
Quantum tunneling between mirror-related wells of a torsional potential sets the timescale for coherent interconversion of chiral conformers.Query-Efficient Quantum Multi-Objective Optimization for Materials Configuration Search via Bayesian Weight Selection
Materials design is a multi-objective problem, and recent advances in quantum optimization make it possible to bring quantum solvers to bear on such problems.Bounding Fidelity of Non-Stabilizer States from Local Pauli Measurements
Nonstabilizerness, commonly referred to as magic, is essential for universal quantum computation.Overcoming the Representational Limitations of Amplitude Encoding for Quantum Neural Networks
Quantum Neural Networks (QNNs) offer a framework for learning functions from classical data, but their expressive power depends critically on how inputs are encoded into quantum states.Toward Quantum Monte Carlo for Sovereign Debt Risk: A proof of concept
We present a proof-of-concept pipeline that applies quantum amplitude estimation to the probability that a sovereign debt-to-GDP ratio exceeds a critical threshold at a given horizon.Engineered Learning Problems on Noisy Quantum Processors
Despite quantum machine learning being an active topic of research, demonstrations of algorithms run on quantum hardware beating classical methods remain rare.Channel dichotomies
We study channel interconversion under non-signalling superchannels, where the asymptotic conversion rate is given by the ratio of the channel capacities.Hybrid Quantum Algorithms for Trade Surveillance Analytics
Anti-money laundering (AML) and trade surveillance remain largely manual: rule-based monitoring raises alerts of which, by estimate, over 95% are false positives, each reviewed by a human analyst.Control-Noise Trade-offs in Industrially Integrated ${}^{28}\mathrm{Si}/\mathrm{SiGe}$ Spin-1/2 Qubits
Scaling silicon spin qubits to fault-tolerant processors requires semiconductor foundry integration, yet it remains unclear how industrial fabrication and dense device integration affect qubit…The Role of Electron-Nuclear Coupling on Chemical and Physical Processes
Over the last few decades, Born-Oppenheimer (BO) and Born-Oppenheimer-Huang (BOH) treatments for electron-nuclear equation of motion have been considered as the cornerstone for qualitative as well…Focusing through coupled multimode fibers for miniaturized single-atom tweezer arrays
Real-world deployment of quantum technologies requires systems in low SWaP-C packages.Lifting the mixed to the pure: quantum phases of matter from canonical purification
Pure-state quantum phases are defined through finite-depth local unitary connections.Locality, Probability and the Relevance of History
Relativistic theory and experiments teach us that causal influences are constrained by the speed of light.GENIE: learned quantum circuits as embedding impurity solvers, and why compactness, not correlation strength, decides when they work
Sample-based quantum diagonalization has been used as an impurity solver in density matrix embedding theory (DMET), but always with fixed-form circuits and without comparison to classical selection…No generalised contextuality from the vacuum
We show that, under certain conditions, generalised contextuality, in the sense introduced by Spekkens, cannot be created from the vacuum of a quantum field.Solvable coupled cluster states in $d=\infty$ with prescribed momentum distribution
Two of the most successful ideas in many-body theory, the exponential coupled cluster ansatz and DMFT, have to date developed separately.Resource efficient Sample Based Quantum Simulation through Fragmentation and Virtual Partitioning of QPU
Present-day sample-based quantum algorithms within quantum-centric supercomputing workflows require substantial classical post-processing, large circuit depths to produce chemically relevant…Logical Bell Inequalities for Marginal Wigner Negativity
We construct logical Bell inequalities whose violations are determined by the Wigner function of a reduced quantum state.Empirical Evaluation of Quantum Kernel Methods for Classification: A Comparative Study with Classical Kernels
Quantum kernel methods are the most concrete near-term proposal for quantum machine learning on classical data, yet published benchmarks disagree on whether they outperform tuned classical kernels…