Fault-Tolerant Resource Comparison of Qudit and Qubit Encodings for Diagonal Quadratic OperatorsFinite local Hilbert-space truncations arise naturally in quantum simulations of lattice field theories and motivate qudit encodings, but their fault-tolerant advantage over qubit encodings remains…Samuel Godwood, Doğa Murat Kürkçüoğlu, Gabriel N. Perdue et al.·Jul 29, 2026SaveLearn
Shot-based quantum encoding: a data-loading paradigm for quantum neural networksEfficient data loading remains a bottleneck for near-term quantum machine learning. Existing schemes (angle, amplitude, and basis encoding) either underuse the exponential Hilbert-space capacity or…Basil Kyriacou, Viktoria Patapovich, Maniraman Periyasamy et al.·Jul 29, 2026SaveLearn
Dynamics of entanglement entropy for a locally monitored lattice gauge theoryThe 1+1 dimensional Z2 gauge theory is the simplest model that allows for quantum computation or quantum simulation to probe the fundamental aspects of a gauge theory coupled with dynamical…Nisa Ara, Arpan Bhattacharyya, Nilachal Chakrabarti et al.·Jul 29, 2026SaveLearn
Semidefinite block-matrix relaxations for computing quantum correlationsBounding the correlations predicted by quantum theory is an important challenge in quantum information science. Today's leading approach is semidefinite programming relaxations, but existing…Nicola D'Alessandro, Carles Roch i Carceller, Armin Tavakoli·Jul 29, 2026SaveLearn
Resource-efficient Quantum Algorithms for Selected Hamiltonian Subspace DiagonalizationQuantum algorithms for selecting a subspace of Hamiltonians to diagonalize have emerged as a promising alternative to variational algorithms in the NISQ era. So far, such algorithms, which include…Vincent Graves, Manqoba Q. Hlatshwayo, Theodoros Kapourniotis et al.·Jul 29, 2026SaveLearn
Quantum field theory for classical fieldsFor classical field theories with probabilistic initial conditions the classical field observables are an idealization. Their arbitrarily precise values poorly reflect the characteristic uncertainty…Christof Wetterich·Jul 29, 2026SaveLearn
Using anti-squeezed Schrödinger cat states for detection of a given phase shiftWe propose to use the antisqueezing-enhanced non-Gaussian Schrödinger cat quantum states of the probing light for the task of detection of a given phase shift in optical interferometers. We show that…V. L. Gorshenin, K. D. Dyadkin, S. D. Chikalkin·Jul 29, 2026SaveLearn
Geometry-Enabled Radiation from Structured Paraxial ElectronsWe present a microscopic calculation of spontaneous photon emission by twisted (paraxial) electrons propagating through inhomogeneous, axisymmetric magnetic fields. We construct exact electron states…M. S. Epov, I. E. Shenderovich, S. S. Baturin·Jul 29, 2026SaveLearn
Bright Source of High-Dimensional Temporal EntanglementHigh-dimensional entanglement is considered to hold great potential for quantum key distribution (QKD) in high-loss and -noise scenarios. To harness its robustness, we construct a source for…Dorian Schiffer, Robert Kindler, Alexandra Bergmayr-Mann et al.·Jul 29, 2026SaveLearn
Fault Attacks on ML-based Quantum Control and Error CorrectionMachine-learning (ML) models are increasingly used in quantum computing systems to discriminate multi-qubit readouts, mitigate correlated readout errors, and decode quantum error-correcting codes,…Anthony Etim, Jakub Szefer·Jul 29, 2026SaveLearn
An Optimized Construction of Lie Algebra Generator Pools for Variational Quantum Eigensolvers in ChemistryLie algebras are essential mathematical structures used in physics to describe sets of quantum operators. Identifying a minimal set of generators to construct these algebras is a central challenge.…Yaromir Viswanathan, Olivier Adjoua, César Feniou et al.·Jul 29, 2026SaveLearn
Coherent regime of Kapitza-Dirac effect with electronsElectron matter waves coherently diffract when passing through a periodic structure of light formed by two interfering light waves. In this so-called Kapitza-Dirac effect, the electron momentum…Kamila Moriová, Petr Koutenský, Neli Laštovičková Streshkova et al.·Jul 29, 2026SaveLearn
Information Processing in Quantum Thermodynamic Systems: an Autonomous Hamiltonian ApproachExtending the quantum formulation of [Phys. Rev. X 3, 041003 (2013)] to a more general setting for studying the thermodynamics of information processing including initial correlations, we generalize…Shou-I Tang, Emery Doucet, Akram Touil et al.·Jul 29, 2026SaveLearn
Anti-concentration is (almost) all you needUntil very recently, it was generally believed that the (approximate) 2-design property is strictly stronger than anticoncentration of random quantum circuits, mainly because it was shown that the…Markus Heinrich, Jonas Haferkamp, Ingo Roth et al.·Jul 29, 2026SaveLearn
Angular Geometry of Atomic Multipole TransitionsA simple way to calculate Rabi frequencies is outlined for interactions of atomic or nuclear multipole moments with laser fields that focuses on their relative geometry. The resulting expression…Wesley C. Campbell·Jul 29, 2026SaveLearn
Deterministic single-photon source over the terahertz regimeThe terahertz (THz) regime still lacks a source capable of emitting single photons deterministically. Here, we propose an on-demand THz single-photon source, triggered by a sequence of coherent…Caspar Groiseau, Miguel Á. Martínez-García, Diego Martín-Cano et al.·Jul 29, 2026SaveLearn
Super-resolving frequency measurement with mode-selective quantum memoryHigh-precision optical frequency measurement underpins modern science and technology, yet conventional spectroscopic techniques struggle to resolve sub-linewidth spectral features. Here, we introduce…Shicheng Zhang, Aonan Zhang, Ilse Maillette de Buy Wenniger et al.·Jul 29, 2026SaveLearn
Intermediate Excited State Relaxation Dynamics of Boron Vacancy Spin Defects in Hexagonal Boron NitrideOptically addressable spin defects in hexagonal boron nitride offer promising potential for 2D quantum sensing, though excited-state dynamics remain poorly understood. In particular, the…Paul Konrad, Mehran Kianinia, Lesley Spencer et al.·Jul 29, 2026SaveLearn
Enhanced Variational Quantum Kolmogorov-Arnold NetworkThe Kolmogorov-Arnold Network (KAN) places the trainable functions on the synapses rather than on the neurons. Existing quantum implementations either lack accuracy (Variational Quantum KAN, VQKAN)…Hikaru Wakaura, Rahmat Mulyawan, Andriyan B. Suksmono·Jul 29, 2026SaveLearn
Entanglement swapping under quantum information maskingQuantum information contained in single-particle states can be masked by mapping them to entangled states. In this paper, we consider entanglement swapping under the masking of quantum information.…Zhaoxu Ji, Peiru Fan, Atta Ur Rahman et al.·Jul 29, 2026SaveLearn
A Protocol-Guided LLM Agent for Quantum Program Synthesis and ExecutionThis study evaluates a protocol-guided large language model (LLM) agent workflow for quantum program synthesis and execution. A versioned YAML protocol specifies interface and quantum-semantic…Ming-Kang Ho, Tai-Yue Li·Jul 28, 2026SaveLearn
Multiparameter sensing of axion dark matter with superconducting-qubit networksWe propose a quantum sensor network for direct detection of quantum chromodynamics (QCD) axion dark matter using entangled superconducting qubits. In the presence of a static magnetic field, the…Le Bin Ho·Jul 28, 2026SaveLearn
Transformer fault diagnosis using an efficient simulation-driven variational quantum classifier with domain-aware feature encodingEarly transformer fault diagnosis is challenged by nonlinear dissolved-gas interactions, overlapping fault signatures, and limited labeled data, while practical deployment further requires reliable…Huy Hoang Le, Ba Tu Phung, Dai Huynh et al.·Jul 28, 2026SaveLearn
Is the H Atom Surrounded by A Cloud of Virtual Quanta Due to the Lamb Shift?The Lamb shift, one of the most fundamental interactions in atomic physics, arises from the interaction of H atoms with the electromagnetic fluctuations of the quantum vacuum. The energy…G. Jordan Maclay·Jul 28, 2026SaveLearn
Designing tight frames for quantum computingThe aim of this thesis is to explore the implementation of a special kind of quantum measurements, so called harmonic tight frames. To achieve this goal, representation theory is addressed,…Luis Quezada·Jul 28, 2026SaveLearn