Stream Decoding with Confidence Scores at Room and Cryogenic TemperaturesIn fault-tolerant quantum computing, fast and accurate decoding is crucial. Snowflake is a decoder for the surface code that runs in a streaming fashion. In this paper, we implement Snowflake on…Maries Tahaab, Tim Chan, James Kirkman et al.·Aug 11, 2026SaveLearn
Unified Exact Cylindrical Dirac Modes and Symmetry-Resolved Quantum GeometryExact cylindrical solutions of the free Dirac equation provide natural single-particle modes for a broad class of axially symmetric relativistic fermion systems, including electron vortices,…Zhongze Guo, Bei Xu, Qiang Gu·Aug 11, 2026SaveLearn
State-Dependent Visibility of Non-Commutative Ordering in Quantum DynamicsA nonzero commutator proves that two orderings differ as operators, but it does not ensure that a physical state can reveal the difference. We ask when non-Abelian ordering information becomes…Ji-Chong Yang, Gui-Qi Hu·Aug 11, 2026SaveLearn
Simultaneous Heisenberg-Limited Multiparameter Metrology via Indefinite EvolutionQuantum metrology achieves Heisenberg-limited precision in single-parameter estimation, but its multiparameter extension is fundamentally constrained by both parameter-encoding and measurement…Hang Xu, Tailong Xiao, Ze Zheng et al.·Aug 11, 2026SaveLearn
A Single Atom in Front of a Mirror is a Universal Reservoir ComputerUniversal approximation in reservoir computing is typically associated with a class of reservoirs. We show that universality can be associated with a single reservoir, considering a minimal setup of…Peter J. Ehlers, Phi Hung Nguyen, Kanu Sinha et al.·Aug 11, 2026SaveLearn
Private Correlations Certify Sensing CapabilityWe show that private correlations in a bipartite quantum state constitute a metrological resource for distributed sensing assisted by a possibly noisy channel from one party to the other. We begin…Yunkai Wang, Peixue Wu, Graeme Smith et al.·Aug 11, 2026SaveLearn
Symmetrized Block-Product Periodic Marginals in Infinite Translation-Invariant Quantum ChainsWe study local marginals in one-dimensional translation-invariant quantum systems that may hide finite-period structure. Given an n-site reduced density matrix, we ask whether it can be obtained by…Xiao Zeng, Kaiyan Yang, Lingxia Zhang et al.·Aug 11, 2026SaveLearn
Wave-particle-mixedness redistribution in Schwarzschild spacetimeThe redistribution of the wave feature, particle feature, and mixedness is investigated for two-qubit isotropic states in Schwarzschild spacetime under Hawking radiation and environmental…Sumeng Wang, Xiaofen Huang·Aug 11, 2026SaveLearn
New Methods and Frameworks for Quantum State Preparation in Modern Quantum SystemsThis thesis studies exact, deterministic preparation of arbitrary dense n-qubit states, the data-loading step in quantum signal and image processing. It derives two syntheses built on the Digital…Alexis Gomez·Aug 10, 2026SaveLearn
Unitary-orbit classification and a refinement theorem for context-independent projective probabilitiesLet H be a finite-dimensional complex Hilbert space, and let w(P, M) be a normalized probability weight assigned to an outcome projection P as it occurs in a projective…Michael P. Rubin·Aug 10, 2026SaveLearn
Programmable Heisenberg-limit sensor from a nonlinear quantum energy pumpWe introduce a programmable Heisenberg-limited bosonic quantum sensor based on a nonlinear quantum energy pump, implemented with a Kerr-nonlinear resonator coupled to multiple high-Q microwave…Yang Peng·Aug 10, 2026SaveLearn
Bayesian approach to simultaneous quantum multiparameter estimation with finite dataMultiparameter estimation remains a fundamental challenge in quantum estimation theory because the optimal measurements associated with different parameters are generally incompatible. In this work,…Chun Kit Dennis Law, József Zsolt Bernád·Aug 10, 2026SaveLearn
Unextendible stabiliser basesWe study incomplete sets of orthogonal stabiliser states that cannot be extended by a further stabiliser state orthogonal to all of its members. Such sets are the stabiliser analogue of unextendible…Markus Frembs·Aug 10, 2026SaveLearn
Williamson majorization theory of fermionic non-GaussianityPure-state entanglement rests on a single algebraic backbone: majorization of the Schmidt spectrum governs state conversion under local operations and classical communication, and constrains…Xhek Turkeshi, Piotr Sierant, Poetri Sonya Tarabunga·Aug 10, 2026SaveLearn
Bounds for Apparent Second-Law Violations in Quantum TrajectoriesNegative stochastic entropy production is commonly called an apparent violation of the second law. In general quantum-trajectory dynamics, however, the physical entropy production σ need not obey a…Domingos S. P. Salazar·Aug 10, 2026SaveLearn
Non-equilibrium theory of projected ensemblesProjected ensembles---the collections of conditional pure states induced on a system by measuring an entangled environment---have become central objects in quantum science, underlying deep…Fabio Anza, Cameron Hahn·Aug 10, 2026SaveLearn
Long-lived memory effects in the defect bath of superconducting qubitsWe reveal long-lived memory effects in the defect bath of a superconducting transmon qubit through electric-field tuning of two-level system (TLS) defects coupled to the qubit. Using a fast TLS…Abhishek Agarwal, Masum Uddin, Shroya Vaidya et al.·Aug 10, 2026SaveLearn
Kinetics of sliding-window quantum error correctionPractical implementations of quantum error correction (QEC) require rapid measurement and continuous processing of the syndrome information in order to prevent a backlog of unprocessed data. While…Adithya Sriram, Charles Stahl, Aleksander Kubica et al.·Aug 10, 2026SaveLearn
Eliminating photon transport in long-baseline optical interferometry using quantum memoriesIn this paper, we describe the fundamental operating mechanisms of optical interferometry using quantum memory and entanglement. We show how these remove the optical delay line bottleneck. Quantum…Yousef K. Chahine, Chaohan Cui, William DeRocco et al.·Aug 10, 2026SaveLearn
Phase diagram of lasing under correlated pump from GPU-accelerated Truncated Wigner dynamicsSuperradiant (SR) lasers store optical coherence in the atomic medium rather than the cavity field, but the incoherent drive that sustains inversion imposes a trade-off: local pumping yields coherent…Oksana Chelpanova, Martino Stefanini, Michael O'Keeffe et al.·Aug 10, 2026SaveLearn
Coupled-Layer Codes: Beyond Quantum Product ConstructionsProduct codes are an important class of quantum error-correcting codes constructed from multiple input codes, which can give rise to asymptotically good quantum low-density parity check codes. In…Shuyu Zhang, Tzu-Chieh Wei, Nathanan Tantivasadakarn·Aug 10, 2026SaveLearn
ND-Photonic QRNGs in a Noisy EnvironmentStandard pseudo-random generators have weaknesses that have led to the development of quantum random number generators (QRNGs). However, common QRNG validation methods, whether based on quantum…J. M. Agüero Trejo, Cristian S. Calude, O. C. Stoica·Aug 10, 2026SaveLearn
Global Non-Identifiability of Fubini-Study Geometry from Complete One-Period Endpoint DataWe establish a global, worst-case non-identifiability theorem for periodically driven finite-dimensional quantum systems. On the unrestricted smooth periodic Hamiltonian class, we show that the…Rashid Ahmad·Aug 10, 2026SaveLearn
Catalytic Stabilization of Ergotropy and Backflow Suppression in Open Many-Body Quantum BatteriesCoherent energy backflow and non-Markovian oscillations limit energy retention and degrade extractable work (ergotropy) in open many-body quantum batteries. Here, we present a catalyst-mediated…Liang Luo, Shun-Cai Zhao·Aug 10, 2026SaveLearn
A Quantum Coherence Microscope in the Hubbard RegimeQuantum coherence underlies collective quantum phenomena and emerging quantum technologies. Quantum gas microscopes have transformed quantum simulation by providing projective snapshots of many-body…Lin Su, Michal Szurek, Alec Douglas et al.·Aug 10, 2026SaveLearn