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 119
Covertness as a resource constraint in quantum target sensing
Quantum covert target sensing aims to detect low-reflectivity targets embedded in the thermal environment while avoiding discovery by an adversary.Two-body control of noiseless subsystems with mixed $SU(3)$ representations lifts teleportation above the classical fidelity limit
Collective noise can leave degrees of freedom unaffected, allowing them to store quantum information.Stimulated Parametric Down-Conversion: From Foundational Coherence to Structured Light Applications
Stimulated parametric down-conversion (StimPDC) is the seeded version of the process that underlies much of photonic quantum information.Quantum approaches for particle-in-cell codes
Solving the high-dimensional, nonlinear partial differential equations that govern the rich physics of plasmas remains a major computational challenge.Pulse-resolved post-generation phase control of squeezed light at 93 MHz with a bulk lithium-niobate modulator
Time-domain multiplexing of continuous-variable quantum states provides a scalable approach to photonic quantum information processing, in which individual temporal modes can be sequentially…Compiling Together: High-Throughput Distributed Quantum Computing via Multi-Compilation
Quantum computing is a promising paradigm for problems that are challenging for classical machines, but realizing that promise requires far more qubits than a single processor can offer.Pathway-resolved analysis of internal conversion enabled by Gaussian boson sampling
Gaussian Boson Sampling (GBS) has provided strong evidence of quantum advantage, motivating the search for real-world applications.Pricing of graph-based quantum portfolios from first principles
A central topic in economics and finance is the valuation of strategic games and bets, of investments providing uncertain future cashflows, and of other asset-like structures and contracts.Efficiently and Reliably Measuring Information Processing Capacity in Dynamical Systems via Kernels
Information Processing Capacity (IPC) is a powerful system-agnostic metric for quantifying a dynamical system's computational capability and is widely used in quantum reservoir computing.Hamiltonian Eigenvalue Transformation by Tridiagonal Gadgets
An analog device implements a local Hamiltonian H, but a polynomial P (H) is in general not local, so the device cannot implement it.Free fermionic black holes as polarised mirrors
Understanding the speed with which various classes of quantum systems can scramble information is a key goal of quantum information theory, with relevance to both fundamental physics and the study…Learning Noise-Robust Stabilizer Structure via Bell Sampling
Bell sampling efficiently learns the stabilizer group, and hence the stabilizer nullity, of pure states with little magic, a primitive underlying tomography and certification of low-magic states.Beyond Pure Dephasing: Quantum Error Correction in Single Molecules Requires Multiple Spins
We propose multi-spin molecules as a viable architecture for fault-tolerant quantum computing.Quantum Key Distribution with Entanglement-Swapped Photons from a Quantum Emitter
Quantum key distribution (QKD) is a fundamental functionality of quantum networks.Rate-Optimal Quantum Discrete Simulation Optimization
Quantum computing has developed rapidly in recent years and has shown potential advantages over classical computing in various domains.Strict non-tightness of the level-3 quantum bootstrap for a natural three-dimensional Hamiltonian, at an excited level
For the coupled three-dimensional double well $H=\tfrac12|p|^2+2\sum_i(q_i^2-1)^2-\sum_{i<j}q_i^2q_j^2$ we exhibit, at the first excited energy level (and also at the ground state), a linear…Distance-Independent Universality of Clifford+T
A well-known theorem states that the Clifford+T gate set is universal for quantum computing.No Size-Preserving Amplification with Quantum Advice
Marriott and Watrous showed that quantum Merlin--Arthur games admit generic error reduction without increasing witness size [Computational Complexity, 2005].Degree-conditioned anneal offsets reshape certified-optimum sampling for minimum vertex cover
Quantum annealers can sample degenerate optima unevenly, so the composition of finite-read output matters when multiple solutions are sought.Quantum utility routing in continuous-variable QKD networks with trusted and untrusted relays
Continuous-variable quantum key distribution (CV-QKD) networks require routing strategies that account simultaneously for secret key generation, relay trust and finite network resources.