Approaching the Fundamental Limit of Single-Shot Qubit Frequency Tracking with an Adiabatic Tangentially-Modulated PulseUnderstanding and mitigating noise in two-level quantum systems is essential for achieving high-fidelity qubit control. Conventional frequency tracking techniques, such as Ramsey interferometry, are…Itamar Oren, Luke I. Dyer, Calum Holker et al.·Aug 6, 2026SaveLearn
Matrix Product State Theory of Few-Photon Squeezed Pulses Interacting with a Two-Level Emitter in a WaveguideSqueezed light states have a special place in quantum optics with potentially profound applications in emerging quantum technologies. We present a numerically-exact matrix product states (MPS)…Sofia Arranz Regidor, Matthew Kozma, Stephen Hughes·Aug 6, 2026SaveLearn
Exact quantum circuits for lattice Boltzmann realization of the Dirac equationThe quantum lattice Boltzmann (QLB) scheme of Succi and Dellar advances a four-component Dirac spinor on a lattice by a fixed sequence of local, exactly norm-preserving operations: a basis rotation,…Nilesh Sawant, Ethan Young, Kevin Griffin et al.·Aug 6, 2026SaveLearn
Generalized Loschmidt echoes associated with operational quantum non-MarkovianityNon-Markovianity can be characterized by performing a series of successive measurements and analyzing departures of the corresponding outcome statistics from a Markovian probabilistic structure.…Cecilia Cormick, Adrián A. Budini·Aug 6, 2026SaveLearn
Detecting quantumness with generalized Loschmidt echoesLoschmidt echoes are a well-established method to characterize dynamical properties such as quantum chaos and sensitivity to perturbations. Here we present a straightforward generalization that…Cecilia Cormick, Adrián A. Budini·Aug 6, 2026SaveLearn
Improving quantum-battery charging via unidirectional quantum jumps to metastable stateIn the process of charging a quantum battery, quantum jumps play a detrimental role because they induce transitions from higher to lower energy levels, leading to energy dissipation. This be- havior…Ewelina Lange, Grzegorz Chimczak, Anna Kowalewska-Kudłaszyk et al.·Aug 6, 2026SaveLearn
KPZ Superdiffusion of Local Correlators in Diffusive Random Quantum CircuitsWe study the single-particle Green's function G(x,t)= σ-x(0)σ+0(t) in one-dimensional particle-number-conserving random unitary circuits coupled to an external bath. For fixed…Ewan McCulloch·Aug 6, 2026SaveLearn
Bell nonlocality from twisted statisticsWe investigate Bell correlations for a free real quantum scalar field on the noncommutative Moyal plane. Although the free field dynamics and the one-particle sector remain unchanged, the deformation…Ivana Đorđević, Jovan Potrebić, Aleksandra Gočanin et al.·Aug 6, 2026SaveLearn
Dimension-Free Polylogarithmic Quantum Shadow Tomography from Sequential Pretty-Good MeasurementsShadow Tomography is a fundamental problem in quantum information theory. Given multiple copies of an unknown d-dimensional quantum state ρ and a known collection of observables…Fernando Granha Jeronimo, Qizhao Huang, Lenny Liu·Aug 6, 2026SaveLearn
On Optimal Quantum Data Hiding and Maximal Separable BallQuantum data hiding asks how much distinguishing power can be lost when global measurements are restricted to local measurements and classical communication. In this work, we establish sharp results…Zhi Li·Aug 6, 2026SaveLearn
Time-Reversal Selection Rules for Quantum Error CorrectionWe apply time-reversal symmetry to quantum codes and show that it imposes parity selection rules on the physical error algebra. A time-reversal-invariant logical qubit on an odd number of spins is a…Eric Kubischta, Ian Teixeira·Aug 6, 2026SaveLearn
Impact of Nonlinearities on Local Kinetic and Thermokinetic Uncertainty Relations in Bosonic TransportThe precision of transport observables can be bounded by the entropy production and the activity of the transport process via kinetic and thermokinetic uncertainty relations. In linear bosonic…Didrik Palmqvist, Luca Magazzù, Milena Grifoni et al.·Aug 6, 2026SaveLearn
Nonlinear Compton scattering in a quantized pump fieldWe develop a fully quantized theory of nonlinear Compton scattering driven by a single-mode quantum field. Exact quantum-Volkov states retain pump depletion, back-action, and final-state correlations…Kenan Qu·Aug 6, 2026SaveLearn
Approximate Quantum Error Correction at Chiral Topological EdgesTopologically ordered phases naturally realize quantum error correction through nonlocal encoding of quantum information. More recently, conformal field theories have been shown to realize…Yuntai Song, Zejun Liu, Zhencheng Wang et al.·Aug 6, 2026SaveLearn
Exponential logical-error reduction in quantum memories via optimal syndrome-measurement timingSyndrome-measurements timing is usually treated as a fixed clock cycle of a quantum error-correcting code. For quantum memories, however, the intra-measurement interval is itself an optimizable…Tobias Haug, Kishor Bharti, Leandro Aolita·Aug 6, 2026SaveLearn
Fundamental limits of parameter estimation with heralded optical non-Gaussian states generated from Gaussian resourcesNon-Gaussian states can exhibit large quantum Fisher information (QFI) in quantum sensing. In optical systems, however, its generation is often probabilistic via the boson-sampling type conditional…Shohei Kiryu, Kazufumi Tanji, Yoshihiro Ueda et al.·Aug 6, 2026SaveLearn
Global vs. Product Observables in Bipartite Quantum Systems: The Sharp BoundTo probe a bipartite quantum system, one may use arbitrary global operators or restrict to product operators acting separately on the two subsystems. We determine the sharp universal comparison…Zhi Li, Xiaofei Shi·Aug 6, 2026SaveLearn
Warm-Starting MaxCut Relaxation via Low-Depth Quantum Approximate Optimization AlgorithmQuantum optimization has attracted growing interest as quantum hardware continues to improve, yet state-of-the-art classical solvers remain a formidable benchmark for practical utility. Rather than…Bao G. Bach, Ilya Safro, Filip B. Maciejewski·Aug 6, 2026SaveLearn
Error-detected surgery on Iceberg codesWe construct explicit error-detecting surgery gadgets---small systems of auxiliary qubits and checks---for the high-rate Iceberg codes [[2N,2N-2,2]], to perform fault-detected measurements of…Andrea Di Fini, Samuel Crew, Laura Pecorari et al.·Aug 6, 2026SaveLearn
Quantum Amplitude Estimation for Travel Time Estimation in Stochastic Vehicle Routing ProblemsSolving the Vehicle Routing Problem (VRP) in Stochastic Transportation Networks (STNs), a core task in Intelligent Transportation Systems (ITS), introduces estimation challenges for stochastic path…Xingyue Wang, Monika Filipovska·Aug 6, 2026SaveLearn
Master equation for systems interacting with linearized gravityWe investigate the open quantum dynamics of a system of two masses interacting with an environment of linearized gravitational waves. We formulate the analysis in terms of the observable proper…Oliviero Angeli, Anirudh Gundhi, Angelo Bassi·Aug 6, 2026SaveLearn
Hadamard sensing channel: deterministic artifact suppression for quantum sensorsDynamical decoupling sequences are essential for nanoscale quantum sensing, but the finite duration of microwave pulses generates spurious responses. While phase randomization (PR) protocol can…Weibin Ni, Lei Sun·Aug 6, 2026SaveLearn
Time-Dependent Hamiltonian Simulation with Optimal Query ComplexityWe give a query-optimal algorithm for simulating a general n-qubit time-dependent Hamiltonian H(t) on [0,T], assuming that H is Lipschitz continuous and \|H(t)\|≤α. In the standard…Boyang Chen, Minbo Gao, Xinzhao Wang et al.·Aug 6, 2026SaveLearn
Balanced Routing for Symmetric Quantum CircuitsMapping quantum programs to restricted physical chips requires SWAP operations, incurring depth and error penalties. In symmetric programs, this routing overhead breaks theoretical symmetry because…Samuel Punch·Aug 6, 2026SaveLearn
Quantum framework for event graphsGraph representations of discrete events provide a natural foundation for machine-learning models of anomaly detection, yet they also suggest a deeper quantum description in which graph structure…R. P. Erickson·Aug 6, 2026SaveLearn