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 125
Function-like pseudorandom unitaries generate pseudorandom quantum processes
Haar-random unitaries provide a canonical model of generic random quantum evolution, but they typically have exponential description and circuit complexity.Learned Parallel Bit-Flipping Sequential Belief Propagation Decoding of Quantum LDPC Codes
Quantum low-density parity-check (QLDPC) codes are promising candidates for low-overhead fault-tolerant quantum computation, but their practical use requires fast, low-complexity, and reliable…The stationarity test: a framework for learning quantum many-body systems from their thermal states
The task of learning the Hamiltonian interactions governing a quantum system, given samples of its thermal (or 'Gibbs') states, is a foundational question at the intersection of quantum learning…Quantum synchronization in atom-cavity coupled systems
We consider a cavity quantum electrodynamics (CQED) setup where an ensemble of spin-1 atoms driven by a classical field interacts with two driven cavity field modes.Constant-Per-Layer-Depth MPS-Pretrained Ansatz for Noisy Distributed Quantum Processors
Distributed quantum processors could scale variational algorithms beyond single devices, but circuit depth, communication overhead, and noise limit their performance.Dissipation-Sensitivity Trade-Off in Dissipative Bosonic Systems
We discover a universal trade-off between the dissipation required to maintain a quantum state more sensitive than a thermal one and the sensitivity gain for a driven single-mode bosonic system…Multivariate Quantum Signal Processing
We develop Multivariate Quantum Signal Processing for designing matrix-valued transformations of multiple noncommuting nonnormal block-encoded matrices.Classical Hardness of Learning Functions of Hamiltonians
Morohoshi, Nakayama, Manabe, and Mitarai proposed a physically motivated quantum machine learning problem in which the goal is to predict quantities of the form $\operatorname{Tr}[f(H)ρ]$ from…Robustness hierarchy of bipartite quantum correlations under noisy dynamics
Quantum correlations are fragile under noise, motivating quantitative measures that track not only their presence but also their degradation during physical evolution.Vector chiral order and dynamical quantum phase transitions in an Ising chain with dimerized anisotropic Gamma interaction
We investigate a transverse-field Ising chain with dimerized anisotropic Gamma interactions and demonstrate that, both in the absence and presence of Ising interactions, the competition between…Additive solid immersion lenses for enhanced collection efficiency of shallow NV centers by pulsed laser deposition and structurization of high-k amorphous oxides
The negatively charged nitrogen-vacancy ($\mathrm{NV}^-$) defect in diamond can be used for quantum information processing via the readout of the radiative decay of the excited state into the ground…Rapid mixing of quantum spin chains at any finite temperature
We prove that a quasi-local quantum Gibbs sampler rapidly mixes to the Gibbs state of any 1D finite-range Hamiltonian at all finite temperatures in $\mathcal{O}\left(\log (n/\varepsilon)\right)$ time.Fermionic Gaussian Scrooge Ensembles in Deep Thermalization
Measuring part of a many-body wave function generates a projected ensemble of pure quantum states on the unmeasured subsystem.Experimental quantification of quantum coherence for a set of quantum states
We present a direct experimental verification of quantum coherence for a set of quantum states in a basis-independent manner.Work fluctuation speed limit in boundary conformal field theories
We explore the fundamental limits on finite-time driving in quantum critical systems described by boundary conformal field theory.Correlation Imaging via Hybrid Entanglement between Microwave Photons and Surface Acoustic Wave Phonons
Establishing effective spatial correlations between distinct quantum fields is essential for multi-physics quantum sensing.~We here propose a correlation imaging approach based on the hybrid…Context-Aware Error Mitigation Orchestration for Hybrid Quantum Reinforcement Learning on NISQ Systems
Quantum Reinforcement Learning (QRL) integrates reinforcement learning with parameterized quantum circuits and is a promising approach to combinatorial optimization.Linear-Time Encodable Quantum Codes near the CSS GV Bound
We construct quantum CSS codes with rate-distance tradeoff approaching the CSS GV bound, which can be encoded by a quantum circuit of logarithmic depth and a linear number of gates.Preservability of Measurement Incompatibility: Purification, Activation, and a No-Go Theorem
Measurement incompatibility is a fundamental quantum resource that enables advantages in many quantum information tasks, including cryptography and communication.Achieving Identical Stored Energy in Cascaded Collisional Quantum Battery Charging: Analytical Result
Charging uniformity across distinct trials is an essential requirement for reliable quantum batteries.