On the sample complexity of the generalized hidden shift problem over arbitrary finite groupsWe formulate the generalized hidden shift problem over arbitrary finite groups and obtain upper and lower bounds for the sample complexity in terms of group theoretic data.Juntai Zhou·Sep 5, 2026SaveLearn
Topologically Protected Edge States in One-Dimensional Quantum WalksTopological insulators host protected boundary states that are robust to disorder, making them attractive for applications and motivating their realization in engineered systems. Discrete-time…Emily Maxey, Jacob Mansfield, Beth Thacker et al.·Sep 5, 2026SaveLearn
Towards Continuous Profiling and Optimization of Quantum-Classical PipelinesQuantum applications increasingly execute as multi-stage quantum-classical pipelines, interleaving QPU computation with classical stages like circuit generation, transpilation, layout mapping,…Ayush Bansal, Owen Cochell, Santiago Núñez-Corrales et al.·Sep 5, 2026SaveLearn
Quantum Query Complexity of Persistence Statistics in Graph ZigzagsWe study the query complexity of estimating scalar summaries of zigzag bar lifetimes from snapshot-adjacency bits. For graphs G1,…,Gm on n labeled vertices, let b be the snapshot…Cheng Xin·Sep 5, 2026SaveLearn
Quantum Query Algorithms for the Constructive Diagonal Ramsey TheoremThe constructive diagonal Ramsey problem asks, given adjacency-oracle access to an N-vertex graph, for a clique or independent set of the order guaranteed by Ramsey's theorem. We give a…Cheng Xin·Sep 5, 2026SaveLearn
SAQC: A SAT-Aware Compilation Framework for QAOA-Based Quantum OptimizationThe Quantum Approximate Optimization Algorithm (QAOA) is a promising variational approach for solving Boolean satisfiability (SAT) problems. Existing SAT-to-QAOA workflows first translate Boolean…Till Schnittka, Julie Maria Raju, Abhoy Kole et al.·Sep 4, 2026SaveLearn
Tight Lower Bounds for State Tomography with Limited EntanglementWe study state tomography when each measurement acts on at most k fresh copies and no quantum memory is retained between blocks. We prove a lower bound matching the upper bound in…Ufuk Keskin, Jason Luo, Mahbod Majid et al.·Sep 4, 2026SaveLearn
Characterizing Privacy Risks of Quantum Machine Learning with Emergent Quantum-Native AccessQuantum Machine Learning (QML) has shown rapid advances by utilizing quantum computing for machine learning tasks. Meanwhile, the privacy risks accompanying QML is also starting to be studied, which…Liou Tang, James Joshi, Ashish Kundu·Sep 4, 2026SaveLearn
Quantum lower bounds for convex optimization and real matrix-vector query problemsWe (the author and the AI systems that did the heavy lifting) show that the quantum query complexity of minimizing a convex function over a convex subset of Rn with evaluation and…Andrew M. Childs·Sep 4, 2026SaveLearn
Kerr Induced Control of Synchronization and Quantum State Recovery in a Driven van der Pol OscillatorWe investigate how Kerr nonlinearity modifies quantum synchronization in a squeezed quantum van der Pol oscillator. We show that the Kerr interaction produces an amplitude-dependent frequency shift…Amir Hossein Houshmand Almani, Ali Mortezapour, Alireza Nourmandipour·Sep 4, 2026SaveLearn
Robustness of Dynamical Casimir Effect-Induced Quantum SynchronizationThe robustness of quantum synchronization induced by the dynamical Casimir effect (DCE) is analyzed within a circuit quantum electrodynamics (cQED) architecture consisting of two superconducting…Sebastián Francisquez, Fernando C. Lombardo, Paula I. Villar·Sep 4, 2026SaveLearn
Minimum Cardinalities of Multipartite Unextendible Product BasesIn quantum information theory, the state space of a multipartite quantum system is modeled by a tensor product. In the tensor-product space Cd1·s Cdp, a…Chenhao Wang·Sep 4, 2026SaveLearn
Ordered-Angle Coding for Exact Multiuser Unanimity TestingWe introduce ordered-angle coding for binary-unanimity testing among n transformation-only users in a serial quantum architecture inherited from Loop-Back communication. User Bi fixes one…Luis Adrián Lizama-Pérez·Sep 4, 2026SaveLearn
N-dimensional discrete Fourier transform via bosonic HamiltonianThe discrete Fourier transform (DFT) underpins many classical algorithms and is a fundamental unitary operator for quantum information processing. Implementing the N-dimensional DFT in photonic…Edgar Barriga, Camila Muñoz, Alejandro Muñoz et al.·Sep 4, 2026SaveLearn
Hawking Radiation in non-Hermitian Microscopic AnaloguesNon-Hermitian systems have recently emerged as a convenient platform to realize black-hole physics. Here, we propose a microscopic open quantum system, namely a fermionic tight-binding chain coupled…Diego F. Munoz-Arboleda, Cristiane Morais Smith, Marcus Stålhammar·Sep 4, 2026SaveLearn
Computing 256-bit elliptic curve discrete logarithms in 26 days on a fault-tolerant trapped-ion quantum computer with 20,000 qubitsOne of the strengths of our recently proposed Walking Cat Architecture for a trapped-ion quantum computer is that it is straightforward to extend and optimize for a specific application. As a…Thomas Häner, Felix Tripier, Jacob Young et al.·Sep 4, 2026SaveLearn
Matrix Product Belief PropagationWe introduce "matrix product belief propagation" (MP-BP) as a controlled method for the approximate contraction of two-dimensional tensor networks and graphical models, which generically…Gabriel Woolls, Shahin Jahanbani, Adarsh Pashikanti et al.·Sep 4, 2026SaveLearn
Towards Scaling Quantum Fine-Tuning of Foundational Time Series Models for ClassificationTime-series foundation models produce rich embeddings, but whether quantum models can exploit them, and how far hybrid classical-quantum architectures scale, remains unclear. We address this by…Sang Hyub Kim, Julien Baglio, Rajiv Krishnakumar et al.·Sep 4, 2026SaveLearn
Squeezed light and coherent feedback enhanced multiparameter quantum estimation in a double-cavity optomechanics: steady and dynamical statesMultiparameter quantum estimation in open optomechanical systems is fundamentally constrained by dissipation, thermal fluctuations, and measurement incompatibility. In this work, we investigate a…Hamza Harraf, Mohamed Amazioug, Amjad Sohail et al.·Sep 4, 2026SaveLearn
A photonic source with half-a-GHz single-photon fluxAdvanced optical quantum technologies demands high quality quantum light generation at very high rates. Here, we report on a deterministic single-photon source that simultaneously combines high…P. Zahalka, S. Huijser, A. Pancaldi et al.·Sep 4, 2026SaveLearn
Coincidence-based spectral engineering for spectral matching in cascaded downconversionThree-photon states generated via cascaded spontaneous parametric downconversion provide a direct route to multipartite entanglement. However, current implementations require careful spectral…Mohammed Charafi, Alexandre Z. Leger, Samridhi Gambhir et al.·Sep 4, 2026SaveLearn
Fundamental Limits of Quantum Metrology Beyond Fixed Causal OrderQuantum metrology with indefinite causal order (ICO) has attracted intense interest due to its potential to surpass the limitations of conventional fixed-order strategies. A key open question is…Wenjie Wei, Yutong Li, Shengshi Pang·Sep 4, 2026SaveLearn
Restricting the effects hides a nonphysical symmetry from every causal structureReal-amplitude quantum theory is the subtheory of quantum theory invariant under complex conjugation, and experiments in networks of independent sources have measured correlations above the real…Chon-Fai Kam·Sep 4, 2026SaveLearn
Compiling the 2D Fermi-Hubbard ground-state energy estimation algorithm for active volume quantum architecturesAs quantum computing enters the early fault-tolerant era, circuit compilation choices will increasingly depend on details of the underlying architecture rather than solely optimizing for generic…Harriet Apel, Athena Caesura, Carys Harvey et al.·Sep 4, 2026SaveLearn
SAR and InSAR Change Detection with Quantum Generative ModelsChange detection in synthetic aperture radar (SAR) and interferometric synthetic aperture radar (InSAR) underpins disaster response, infrastructure monitoring and land-use enforcement. Detection is…Samwel K. Sekwao, Shaunak De, Alexis Hocken et al.·Sep 4, 2026SaveLearn