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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The exact information cost of randomized measurements in quantum metrology
Randomized measurements provide state-independent readout for multiparameter quantum sensing.Enhanced shortcuts to adiabaticity in an interacting giant-atom-atomic-waveguide system
In realistic quantum systems, isolated few-level models usually provide only an approximate description, since the controlled subsystem is generally coupled to additional degrees of freedom.Implications of the PXP ground-state sign structure for neural-network variational Monte Carlo
Positive-definite neural-network quantum states cannot directly represent the ground state of the PXP Hamiltonian, since the ground-state wavefunction carries a nontrivial relative-sign structure.Compressed Oracle Duality: A simple framework for knowing what quantum adversaries know
Given a quantum adversary that queries a random oracle, how do we characterize the information that they "know"?Discovering Models for Experimental Quantum Systems with Agentic AI
A central obstacle in realizing color center cavity-QED-based quantum technologies is inhomogeneity, or disorder, among individual emitters.Iterative Quantum Optimization: From Greedy Reductions to Branch-and-Bound
Iterative quantum optimization (IQO) uses quantum-generated information to select a sequence of classical problem reductions.Photon-loss tolerance of the surface-GKP code with anti-photon-loss decoding
Photon loss somewhat limits fault-tolerant photonic quantum computing.Quantum algorithm for weakly correlated molecular electronic ground states with sub-quintic scaling in the system size
Weakly correlated electronic structures are predominant among molecules, and are routinely solved with heuristic classical methods such as the ``gold standard'' CCSD(T) coupled cluster model…Leaving Quantum Bias on the Table: Pushforwards as a Path to Quantum Advantage in Constrained Optimization
Constrained quantum samplers often produce infeasible outputs that retain information about good feasible solutions.Lieb-Robinson Light Cones in Long-Range Bosonic Systems
Lieb-Robinson bounds formulate emergent causality in quantum many-body dynamics.Semi-classical analysis of noise squeezing in Kerr microresonators
Kerr microresonators are integrated nonlinear devices widely used to generate classical optical frequency combs and nonclassical states of light.Polyteam logics for quantum contextuality
We introduce logics of dependence and independence over polyteams (that is, databases with multiple relation schemes), in a similar way as in arXiv:1704.02158v3 [cs.LO].Coherence controls the visibility of frozen disorder in an open quantum chain
A Gaussian position distribution need not imply that frozen disorder is irrelevant.Multicopy teleportation and quantum program retrieval on superconducting quantum hardware
Correction-free teleportation protocols offer a probabilistic route around the limits imposed by the quantum no-programming theorem, but have remained largely theoretical.Experimental Realization of a Nonreciprocal Quantum Battery
Quantum batteries promise faster and more efficient energy storage and extraction by harnessing quantum mechanics, serving as essential building blocks for future quantum devices.Where Does a Variational Quantum Classifier Lose Accuracy? Angle Encoding, Readout and the Fidelity-Kernel Reference in Cyberattack Detection
When a variational quantum classifier performs poorly at detecting network attacks, it is hard to tell which part is to blame: the encoding, the trained circuit or the readout, which turns…Quantum Mpemba effect of Z2 symmetry restoration in the Dicke model
We study a symmetry-restoration quantum Mpemba effect in the dissipative Dicke model as an example of a weakly $\mathbb Z_2$-symmetric open quantum system, where the full Liouvillian is parity…Binary Quantum Hypothesis Testing with a Rejection Option: The Exact Error-Exponent Trade-off
We characterize the exact error-exponent trade-off in binary quantum hypothesis testing with a rejection option for faithful states on a finite-dimensional Hilbert space.Single-Mode Squeezing Using Degenerate Four-Wave Mixing in a Dual-Pump TWPA
Single-mode squeezing of the electromagnetic vacuum is a key resource for mode-selective noise reduction in quantum measurements.Normal Factor Graph Representations of Stabilizer Quantum Codes with Applications
We develop normal factor graph (NFG) representations of stabilizer quantum error-correcting codes and entanglement-assisted quantum error-correcting codes.