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 47
From Link Availability to Deadline-Constrained Key Service: A Feasibility Framework for Mobile Free-Space Quantum Key Distribution
Mobile free-space quantum key distribution (QKD) links can provide secret bits intermittently, whereas applications may need cryptographic key material at specified times.High-quality, deep formation and identification of oxygen-vacancy defects in silicon carbide
Optically addressable paramagnetic defects in silicon carbide (SiC) are attractive for scalable quantum technologies such as quantum sensing.An Invitation to Algebraic Methods in Quantum Theory
In this paper, we present various well-studied examples of quantum systems, and discuss how they might be analysed algebraically.Stochastic and quantum autonomous information machine: efficiency fluctuations, precision and optimization
We investigate the conversion between thermal and informational resources in an autonomous machine coupled to thermal reservoirs and a tape, playing the role of an information reservoir.Elementary proofs of quantum lower bounds for element distinctness and k-sum
We give elementary proofs of the $Ω(n^{2/3})$ quantum query lower bound for element distinctness and the $Ω(n^{k/(k+1)})$ lower bound for the $k$-sum problem, for fixed $k$ and sufficiently large…Discrete WKB approach to density profiles in inhomogeneous two-band free-fermion chains
We extend the discrete WKB method to one-dimensional bipartite tight-binding chains of free fermions with slowly varying hopping amplitudes and on-site potentials.Optimal probes for estimating the dephasing of a quantum spin system
We investigate the optimal estimation of dephasing in finite-dimensional quantum spin systems.Entanglement Asymmetry and Asymmetry Contour under Boundary Symmetry Breaking
We investigate how symmetry-breaking boundary magnetic fields affect magnetization and Rényi-2 entanglement asymmetry (EA) in the transverse-field Ising model.Quantum Machine Learning in Medical Imaging: A Primer for Radiologists
Deep learning has transformed radiology, but the computational cost of training and deploying modern models is outpacing what classical hardware can support.Bounding single-copy information causality violations
Information causality is a physical principle that constrains bipartite post-quantum nonlocal correlations from information-theoretic assumptions.Exploiting the Weyl-Chamber Structure for Hardware-Aware Quantum Circuit Compression
Quantum circuit compression based on tensor networks enables long-time simulation of quantum many-body dynamics on near-term hardware.Minimal unitary representations of time-invariant causal quantum channels
In this work, we study quantum channels that respect causality in single-input-single-output linear time-invariant systems.Modular optical fault-tolerant quantum computation via an interface between verified resources and online logical operations
We introduce a factory--processor interface architecture for modular optical fault-tolerant quantum computation that separates code-dependent encoded-resource preparation from reusable online…Hardware-Friendly Estimation of LCU-Based Expectation Values via Quantum-to-Classical Workload Shifting
Estimating the expectation value of an observable $O$ for a quantum state evolved under a general, possibly non-unitary, operator $A$ is a fundamental task in quantum simulation, chemistry, and…Fermion Scattering on Quantum Computers
Resonant scattering links particle interactions to the formation and decay of unstable excitations.Nonclassicality from Incomplete Fock-State Statistics
Nonclassicality in bosonic systems can be certified directly from occupation probabilities without full state reconstruction.One-sided-DIQKD using any pure bipartite entangled state secure against all attacks
Quantum Key Distribution (QKD) allows spatially separated parties to establish a secret key among themselves based on quantum principles.Generating entanglement in quantum matter with pathway-entangled photons via resonant inelastic X-ray scattering
Resonant inelastic X-ray scattering (RIXS) is conventionally used to probe elementary excitations and correlations in quantum materials.Certain Quantum States Already Require Quantum Time Evolution
Model-independent tests of quantum theory, such as Bell inequality violations, focus on static properties of the theory and do not rely on its dynamical aspects.Low-frustration block encodings by patch routing
Block-encoding has emerged as a core primitive in many quantum algorithms, including quantum simulation.