Signatures of Chaos in a Quasiperiodically Driven Quantum Impact OscillatorWe demonstrate the emergence of quantum-chaotic dynamics in a quasiperiodically driven impact oscillator near the grazing condition. While previous studies of the quantum impact oscillator under…Deepshikha Singh, Titir Mukherjee, Soumitro Banerjee·Sep 16, 2026SaveLearn
Optical Quantum ComputingUnder the label of optical quantum computing, there are a variety of protocols and experiments that use the quantum properties of light to achieve a computational advantage over classical computing…Hamza Hasnaoui, Leonardo Limongi, Taira Giordani et al.·Sep 16, 2026SaveLearn
Bath dimension and initial entropy for closed repeated use of a quantum channelWe characterize the bath resources needed to supply repeated uses of a fixed finite-dimensional quantum channel in a closed device. For each horizon T, one bath, one initial state and one repeated…Seth Douglas·Sep 16, 2026SaveLearn
Quantum Probability Current Guided Reduction of Coupling Control Degrees of Freedom for Excitation TransportTime-dependent coherent control can enhance excitation transport in open quantum networks, but independently controlling every inter-site coupling creates a control space of high dimension and leads…Liuheng Cao, Lin Zhang, Junde Wu·Sep 16, 2026SaveLearn
New directions in dynamical expectation estimationComputing dynamical expectation values typically relies on approximations optimized for the state or observable separately, without accounting for how their errors combine in the final expression.…Panjin Kim, Kyung Chul Jeong, Yun-Tak Oh·Sep 16, 2026SaveLearn
Spectral-Gap Bounds and Timescales for Purity Loss in Hamiltonian--Pointer InteractionsWe investigate the purity dynamics of a quantum system coupled to a continuous-variable pointer through a von Neumann-type interaction Hamiltonian of the form $ Hint=g\,…Orhan Amirov, Necati Çelik·Sep 16, 2026SaveLearn
Unbounded Holevo additivity gaps in finite dimensionsWe establish unbounded two-use Holevo additivity gaps in finite dimensions. For each sufficiently large fixed integer K and all sufficiently large n, we construct channels Tn with output…Jinzhao Wang·Sep 16, 2026SaveLearn
Proof of Heisenberg's Error-Disturbance Relation for Individual MeasurementsHeisenberg originally envisioned the error-disturbance relation under the premise that the state after measurement must remain consistent with the Kennard-Robertson uncertainty relation. This implies…Seiji Kosugi·Sep 16, 2026SaveLearn
The Expressive Power of Constrained QAOA: What You Might Have MISsedFeasibility-preserving mixer Hamiltonians offer an attractive alternative to penalty encodings for constrained quantum optimization, yet how enforcing constraints alters the state space reachable by…Boris Tsvelikhovskiy, Bao Bach, Ilya Safro·Sep 16, 2026SaveLearn
Redesigning the linear--quadratic--Gaussian cost function for feedback cooling of a quantum harmonic oscillatorLinear--quadratic--Gaussian (LQG) control is optimal only with respect to a prescribed cost function, the choice of which dictates the physical objective of the control. We consider feedback cooling…Shuma Sugiura, Koki Shiraishi, Masahito Ueda·Sep 16, 2026SaveLearn
Remote Adiabatic Controlled-Z Gate between Distant Superconducting QubitsDirect entangling gates between spatially separated qubits are a key capability for modular quantum computing. They enable nonlocal quantum circuits to be executed across different processor modules,…Si-Yu Xu, Yi-Rong Jin, Wen-Gang Zhang et al.·Sep 16, 2026SaveLearn
Sublattice-selective control of spin reversal in metasurface-coupled Kagome interfacesCoherent manipulation of photonic interface states requires a control field that matches their internal mode structure. We study this requirement in a two-component Kagome lattice motivated by…Ximo Wang, Qiwei Han, Zhenqi Bai et al.·Sep 16, 2026SaveLearn
Algorithmic Design of Heralded Linear Optical Circuits for Multipartite EntanglementHeralded multipartite entanglement is a key resource for various quantum information tasks. However, designing linear optical circuits that generate specific target states is generally challenging…Jaehee Kim, Hon Wai Lau, William J. Munro et al.·Sep 16, 2026SaveLearn
Fourier Analysis of Parametrized Interactive Quantum ClassifiersInteractive Quantum Classifiers (IQCs) constitute a family of quantum machine learning models inspired by open quantum systems, in which the interaction between a target qubit and an environment is…Fábio Novaes, Fernando M. de Paula Neto, João V. M. Cardoso·Sep 16, 2026SaveLearn
Qurrium: A Python package for randomized measurement-based estimation of quantum state propertiesEstimating quantum state properties is essential across a wide range of applications, from studying quantum many-body physics to benchmarking quantum hardware. We present Qurrium, a Python package…Huai-Chun Chang, Teik-Hui Lee, Arthur Strauss et al.·Sep 16, 2026SaveLearn
The Fourier Uncertainty Principle Through the Lens of Infinite Banded MatricesIn this paper, we investigate the Fourier uncertainty principle through infinite banded matrices by way of a variational approach to minimizing the uncertainty product. Traditional methods for…Cameron L. Williams, Lara C. Ortelli, Gael Silva·Sep 16, 2026SaveLearn
Rényi and Tsallis information entropies for a harmonic position-dependent massIn this paper, we study Renyi and Tsallis information entropies for a Hamiltonian system with position-dependent mass confined in harmonic oscillator potential. Gegenbauer polynomials are used to…Dorcas A. Addo, Daniel Sabi-Takou, Eugene Adjei et al.·Sep 16, 2026SaveLearn
Phase-stable voltage bias for Josephson photonics devicesParametric interactions are foundational to superconducting quantum technologies, yet conventional microwave-driven pumping introduces parasitic Kerr nonlinearities and higher-order harmonics that…Amir Hosein Esmaeili, Naveen Nehra, Alexandre Paquette et al.·Sep 16, 2026SaveLearn
Thermodynamic Uncertainty of Work in Time-Dependently Driven Open Quantum SystemsWe derive a thermodynamic uncertainty relation for work in an open quantum system driven by a time-dependent protocol and subject to repeated projective energy measurements. The protocol is…Chulan Kwon·Sep 16, 2026SaveLearn
TSS Graphs for Hadamard Matrices: Real vs ComplexWe have observed that Hadamard matrices whether real or complex lead to a dense output of identical probabilities for any given single input state. Complex Hadamard matrices have unusual orders and…Wesley Lewis, Darsh Pareek, Ravi Janjam·Sep 16, 2026SaveLearn
Suzuki-Trotter Decompositions and other Methods for Quantum Time Evolution(Suzuki-)Trotter decompositions, splitting methods, (Lie) product formulae... The most common numerical methods for the time evolution of quantum systems come with many names. And they are used…Johann Ostmeyer·Sep 15, 2026SaveLearn
Classical, quantum, and general probabilistic state-discrimination profilesFor a collection of states indexed by [n]=1,…,n, let F(H) denote the optimal unnormalized minimum discrimination error for each nonempty subfamily H⊂eq[n]. We call F the…Mihály Weiner·Sep 15, 2026SaveLearn
QEMScore: How Much Does the Measurement Add to Learned Quantum Error Mitigation?How much does the noisy measurement add to learned quantum error mitigation? An accuracy table cannot say, because a model handed circuit structure can score well without reading the measurement at…Yue Zhao, Huayue Gu, Yushun Dong et al.·Sep 15, 2026SaveLearn
Quantifying and Bounding Spatiotemporal Correlations in Quantum NoiseSpatial and temporal correlations in quantum noise challenge the local Markovian models commonly used in quantum information processing. We develop a unified operational framework for quantifying…Guilherme Zambon, Diogo O. Soares-Pinto·Sep 15, 2026SaveLearn
Depth analysis of the Quantum Approximate Optimization Algorithm with a Grover mixerWe study the Quantum Approximate Optimization Algorithm with a Grover mixer and independently sampled cost and mixing angles. Under a lattice condition on the cost values carried by the initial…Bojko N. Bakalov, Dimitar Grantcharov·Sep 15, 2026SaveLearn