What do position and time mean in the quantum wavefunction?The notation ψ(x,t) is among the first pieces of quantum mechanics that students learn. It is also among the easiest to over-interpret. Because x and t occur as arguments of the same function,…Mustafa Bakr, Zichi Zhang, Margot Stakenborg·Aug 24, 2026SaveLearn
A Unified Quantum Neural Network Framework for Hamiltonian Learning and Emulation of Unknown Quantum SystemsAccurate identification of unknown quantum systems is essential for quantum computing, sensing, and control because the Hamiltonian governs quantum state evolution. This work proposes a QNN based…Ahmad Salmanogli·Aug 24, 2026SaveLearn
Exact and Optimal Recursive Quantum Search via Hilbert-Space DecompositionCurrent approaches to quantum search fail to deeply exploit extant structure in the underlying Hilbert space. Decomposing the search by this structure empowers new strategies and formulations for…John Burke, Ciaran McGoldrick·Aug 24, 2026SaveLearn
`It from Bit': is there a second law of quantum complexity?At a deeper level the principle of least action is interpreted as the law of least entropy increase consistent with Prigogine's principle of minimum entropy production, and the implications of…S. Davatolhagh, A. Sheykhi, M. H. Zarei·Aug 24, 2026SaveLearn
Batched and Complete U-Statistics for Trace-Polynomial Estimation from Classical ShadowsWe study estimation of the trace polynomial tr p(PρP) from global classical shadows, where ρ is an unknown quantum state and P is a fixed projector. Disjoint batching and…Xinyu Song·Aug 24, 2026SaveLearn
Universal equilibrium magic in quantum many-body systemsThermalization conventionally describes local properties of isolated many-body systems at equilibrium. Magic, or nonstabilizerness x2013 the resource enabling universal quantum…Soumyadeep Sarma, Tobias Haug, John Preskill et al.·Aug 24, 2026SaveLearn
Geometric Phases of a Driven Qubit: Comparing Berry and Uhlmann HolonomiesThe Berry phase arises naturally from the adiabatic dynamics of a pure quantum state, whereas the Uhlmann phase is usually formulated kinematically for a prescribed path of mixed states. For a qubit…Hyeonseok Yang, Changsuk Noh·Aug 24, 2026SaveLearn
Deterministic Preparation of Arbitrary Spin EigenfunctionsQuantum states with conserved total spins, or spin eigenfunctions, are important for studying quantum chemistry and quantum manybody physics problems. A typical class of spin eigenfunctions are Dicke…Wenxuan Tao, Jianan Wang, Fen Zuo·Aug 24, 2026SaveLearn
Implementation of nonlocal multi-photon interference by mode swappingMulti-photon interference can be observed using independently generated photons as input. In the most simple case, these photons meet up at a beam splitter, resulting in quantum interference between…Holger F. Hofmann, Yuki Kodama, Jonte R. Hance·Aug 24, 2026SaveLearn
Numerical Evaluation of ZX Calculus Optimization for Solovay Kitaev Quantum Circuit SynthesisFault-tolerant architectures implement non-Clifford T gates through magic-state distillation, so the T-count of a synthesized circuit dominates its physical cost. The Solovay-Kitaev algorithm…Dulari De Silva, Anuradha Mahasinghe, Chon-Fai Kam et al.·Aug 24, 2026SaveLearn
An Exactness Barrier for ZX-Calculus Optimization of Synthesized Clifford+T CircuitsGate synthesis and circuit optimization are usually studied separately, and evidence on their interaction is contradictory: ZX-calculus rewriting removes a stable fraction of Solovay-Kitaev circuits,…Chon-Fai Kam, Anuradha Mahasinghe, Kaushika De Silva et al.·Aug 24, 2026SaveLearn
Classical and quantum spectral density estimation under local graph accessWe study spectral density estimation for the normalized adjacency matrix of an unweighted graph under local access model. Previously, Cohen-Steiner et al. [KDD 2018] proposed an algorithm for…Rong-Hua Li, Meihao Liao, Yichun Yang·Aug 24, 2026SaveLearn
Does Probability Require a Single History?Everettian quantum mechanics is often said to lack coherent probability because every possible measurement result occurs. If all of them exist globally, what is probability supposed to be a…Jonathan Baxter·Aug 24, 2026SaveLearn
Chiral doublon bound states in a synthetic topological waveguideNonlinear waveguide QED serves as a platform for studying correlated photon dynamics, where its interplay with topological bound states can give rise to unconventional phenomena. We investigate a…Ying Xia, Xin Wang·Aug 24, 2026SaveLearn
Quantifying Multipartite Entanglement Based on unified entropyIn this paper, we investigate the characterization of multipartite entanglement based on the unified (q,s)-entropy framework. For bipartite quantum states, we propose an entanglement measure…Yan Hong, Tongtong Xu, Limin Gao·Aug 24, 2026SaveLearn
Fock-state filtering of squeezed states: enhanced nonclassicality and effects of a thermal bathThe ability to tailor photon-number statistics is central to the generation and control of nonclassical states of light. Here, we investigate how Fock-state filtering of squeezed coherent states can…João Pedro Gonzalez de Oliveira, A. Vidiella-Barranco·Aug 24, 2026SaveLearn
Time-Resolved Edge Flux on the SU(3) Triangle: A Cooperative-Decay Graph Framework with Exact Bateman SolutionsCooperative emission from three-level ensembles is conventionally diagnosed through the radiated intensity alone, which cannot say which channels carry the photons at each instant. We promote every…Gombojav O Ariunbold, Vaidyanathan Sivaraman·Aug 24, 2026SaveLearn
Distributed synthesis of arbitrary graph states in quantum networks via rank-two GF(2) reductionExisting schemes for synthesizing graph states in quantum networks are essentially edge-by-edge constructions, so quantities such as the time-slot depth and the resource overhead grow significantly…Xiaoyi Zheng, Lin Chen, Chan-Tong Lam·Aug 24, 2026SaveLearn
A Margolus-Levitin speed limit for observables: mean energy bounds expectation-value change quadraticallyThe Mandelstam-Tamm and Margolus-Levitin quantum speed limits bound how fast a state evolves, using the energy variance and the mean energy above the ground state. Speed limits on observables -- the…Bryan Nasr·Aug 23, 2026SaveLearn
Sharp State-Independent Uncertainty Relations for Multipartite systemsUncertainty relations constrain the fluctuations of incompatible observables, but most familiar bounds depend on the quantum state. State-independent uncertainty relations instead ask how much…Yiling Wang, Naihuan Jing·Aug 23, 2026SaveLearn
Robust Quantum Key Distribution Arbitrarily Close to Local CorrelationsRecently, Wooltorton et al. [Phys. Rev. Lett. 132, 210802 (2024)] and Farkas [Phys. Rev. Lett. 132, 210803 (2024)] have exhibited the mismatch between Bell inequality violations and their…Hari Krishnan SV, Andreas Winter·Aug 23, 2026SaveLearn
Sample-Query Interconversion of Block Encoding of Unknown Quantum StatesBlock encoding embeds a matrix as a sub-block of a unitary matrix and serves as a fundamental input model for quantum algorithms based on quantum singular value transformation, enabling polynomial…Manaki Arihara, Mio Murao·Aug 23, 2026SaveLearn
Error Propagation Theory for Variational Non-Markovian Open Quantum DynamicsVariational approaches based on neural quantum states and physics-informed neural networks provide powerful paradigms for simulating non-Markovian open quantum dynamics. However, extending these…Long Cao, Daochi Zhang, Yao Wang et al.·Aug 23, 2026SaveLearn
Inclusion-Minimal local indistinguishability: a weak form of nonlocalityLocal discrimination of quantum states is a fundamental task in distributed quantum information processing and underlies applications such as quantum communication, data hiding, and secret sharing.…Mao-Sheng Li, Zong-Xing Xiong, Zhu-Jun Zheng et al.·Aug 23, 2026SaveLearn
Laughlin quasihole geometry from a single snapshot ensembleCan a probability distribution measured in one basis determine complex quantum geometry? The answer is affirmative for a lattice Laughlin quasihole. The exact occupation law at one generic reference…Kaushlendra Kumar·Aug 23, 2026SaveLearn