A Difference Operator Approach to Quantum Random Walks: Parseval Identity, Krawtchouk Matrices, and Hermite LimitsWe introduce a discrete difference operator Dk to study the one-dimensional quantum random walk (QRW) with the Hadamard coin. Explicit combinatorial expressions are obtained for the probability…Chien-Wen Hwang·Jul 24, 2026SaveLearn
Can a quantum circuit detect the Unruh effect?The Unruh effect predicts that an accelerating observer perceives the Minkowski vacuum as a thermal bath, yet direct detection remains experimentally inaccessible. Its timelike counterpart, arising…Pravin Kumar Dahal, Timothy C. Ralph, William J. Munro et al.·Jul 24, 2026SaveLearn
Universal scaling framework for parameterized quantum evolutions at criticalityVariational ansätze are a cornerstone of quantum many-body physics, providing compact approximations to complex ground states using finite resources. Recent quantum-technology advances have…Jan T. Schneider, Cristian Tabares, Alejandro González-Tudela et al.·Jul 24, 2026SaveLearn
Full-wave nonlinear microscopy reveals guided channel for ultrafast polariton transportWe show how finite-difference time-domain (FDTD) simulations can be extended to model ultrafast nonlinear microscopy, enabling the prediction of spatially-resolved pump--probe signals in arbitrary…Qingyi Zhou, Piper Fowler-Wright, Zongfu Yu et al.·Jul 24, 2026SaveLearn
Spin-induced multipartite steady-state entanglement of motional modes in hexagonal boron nitride membranesIn this paper, we focus on a scheme in which three high-quality-factor mechanical modes of a hexagonal boron nitride (hBN) membrane monolayer are coupled to a common optically addressable spin defect…Nahid Yazdi, Vahid Salari, Roohollah Ghobadi·Jul 24, 2026SaveLearn
Machine Learning of Quantum Entanglement from Noisy MeasurementsIn this work, we investigate the application of Machine Learning (ML) algorithms to the identification and quantitative characterization of quantum entanglement in polarization-entangled photon…Artur Czerwinski, Maciej Wiśniewski, Paweł Moszczyński·Jul 24, 2026SaveLearn
ViBra: Configuration Interaction for Anharmonic Vibrational Spectroscopy and Quantum-Sampled Configuration SpacesQuantum-centric workflows are a promising route to improving the accuracy of property predictions in computational chemistry and materials science. By integrating quantum sampling algorithms with…Raphael F. Ligorio, Marco Antonio Barroca, Alan Duriez et al.·Jul 24, 2026SaveLearn
Practical advantage beyond the quadratic speedup limit with fully-quantum walksWe introduce a new class of fully-quantum Metropolis walks in which both the proposal and acceptance steps are intrinsically quantum. Unlike standard quantum walks obtained by quantizing classically…Massimiliano Incudini, Guglielmo Mazzola·Jul 24, 2026SaveLearn
Critical Sensing with Autonomous Devices: The Self-Oscillation Threshold of a Frequency-Locked NV-Centre MagnetometerFeedback locking of a probe frequency to a spin resonance is the standard operating mode of precision quantum sensors. Here we deliberately operate such a lock outside its stable regime: a…Joan Toledo Aguilera, Gonzalo Reina Rivero, Marcel Morillas-Rozas et al.·Jul 24, 2026SaveLearn
Quantum Spectral Model: Data Reuploading with Input-Conditioned Frequency SupportA central design principle in modern machine learning and artificial intelligence is to align a model's inductive bias with the structure of its input data. For matrix-valued inputs, relevant…Peiyong Wang, Udaya Parampalli, Casey R. Myers·Jul 24, 2026SaveLearn
Correlated Coherent Errors in Stabilizer Codes: A General Cumulant Framework and Interference-Based Error SuppressionCoherent errors in stabilizer codes are often correlated across qubits and QEC cycles. Having a general analytical treatment of such noise would thus be extremely valuable. We derive here the exact…Rohan N Rajmohan, Antoine Brillant, Peter Groszkowski et al.·Jul 24, 2026SaveLearn
Automated Flag-based Fault-Tolerant State Preparation using Integer Linear ProgrammingPost-selected stabilizer state preparation is a necessary subroutine in fault-tolerant quantum computation, both for initialization of logical qubits, and for logical-ancilla-based error correction…Ben Criger, Aaron Hankin, Justin J. Burau et al.·Jul 24, 2026SaveLearn
Fractal quantum many-body scars and Hamiltonian inverse design from ZX-calculusDiagrammatic languages such as ZX-calculus provide compact and intuitive descriptions of quantum processes and have become established tools for circuit simplification, verification, and compilation.…Marcin Szyniszewski·Jul 24, 2026SaveLearn
Learning to Prepare Molecular Ground States with Transformer ModelsQuantum state preparation is a key component of many quantum algorithms. Performing this step efficiently is essential for realizing practical quantum advantage in quantum chemistry applications.…Alex Koziell-Pipe, Jasmine Brewer, Jem Guhit et al.·Jul 24, 2026SaveLearn
Multiplexed storage and interaction of Rydberg spinwaves via the gradient echo memory protocolCollective Rydberg excitations offer strong and controllable interactions for quantum information processing, sensing, and nonlinear quantum optics, but their integration with temporally or…Bartosz Niewelt, Stanisław Kurzyna, Bartosz Kasza et al.·Jul 24, 2026SaveLearn
Algebraic structure of Tiger codesTiger codes form a family of multimode bosonic quantum codes that unify several previously known constructions, including cat, paircat, and the two-mode binomial code. In this work, we give a…Clément Poirson, Anthony Leverrier, Christophe Vuillot·Jul 24, 2026SaveLearn
Highly indistinguishable photons from a tin-vacancy spin qubit in diamondQuantum networks promise secure communication, distributed sensing and modular quantum computing by interconnecting distant quantum nodes through photonic links. Extending such networks beyond…Dennis Herrmann, Robert Morsch-Golsong, Tobias Bauer et al.·Jul 24, 2026SaveLearn
A route to damage tolerance exceeding 10\% in shuttling-equipped quantum processorsThis is a short study of an approach offering high tolerance to damage (i.e. defects or 'drop outs') in solid state fault-tolerant quantum computing. Our method is primarily aimed at…Quinten Eggerickx, Simon C. Benjamin·Jul 24, 2026SaveLearn
Explicit block-encodings for biharmonic boundary-value problemsThe biharmonic equation is a prototypical fourth-order partial differential equation whose high-dimensional discretization suffers from rapidly growing degrees of freedom and severe ill-conditioning.…Chuwen Ma, Zihao Tang·Jul 24, 2026SaveLearn
Metrology of quantum imaging schemesWe compare the performance of quantum imaging schemes based on spatially correlated photon pairs by formulating them as quantum multiparameter estimation problems, in which the object is…Emma Brambila, Giacomo Sorelli·Jul 24, 2026SaveLearn
Quantum-informed surrogate sampling for combinatorial optimizationWe introduce Quantum-Informed Surrogate Sampling (QISS), a post-processing framework that generates candidate solutions to combinatorial optimization problems from low-weight correlations of shallow…Elisabeth Wybo, Jernej Rudi Finžgar·Jul 24, 2026SaveLearn
Klein tunneling through an asymmetric barrier: Symmetric transmission and directional pair creationWe prove that the transmission probability for the Klein tunneling through a spatially asymmetric barrier is the same for left and right incidence whenever each asymptotic lead carries a single…Andre G. Campos, Denys I. Bondar·Jul 24, 2026SaveLearn
The Threshold Theorem in Watts: Fault Tolerance as a Question About Objective ProbabilityIn 2011 Hagar & Sergioli proposed a new interpretation of objective probability in deterministic physics. On it, the probability of a physical state supervenes on the resources, energy over time,…Amit Hagar·Jul 24, 2026SaveLearn
Lower bounds for the CNOT-complexity of linear reversible operatorsThe CNOT-complexity of an invertible matrix over F2 is the minimum number of CNOT gates needed to synthesize the corresponding linear reversible operator. While the maximum…Søren Fuglede Jørgensen·Jul 24, 2026SaveLearn
Dark Polaron Theory for High Intensity Laser CoolingConventional laser control schemes for cooling and gate operation of trapped ions are limited to the regime of weak laser intensities and small Lamb-Dicke parameters. To overcome this limitation, we…Marcel Morillas-Rozas, Alberto López-García, Enamul Haque et al.·Jul 24, 2026SaveLearn