Microscopic study of topological phase transitions: Percolation point of viewWe investigate microscopic mechanisms underlying decoherence-induced transitions between topologically ordered states. As a first case study, we analyze the color code using topological entanglement…Keisuke Kataoka, Ikuo Ichinose·Aug 2, 2026SaveLearn
On some potentials based on exponential functionsBy means of a simple and systematic normalization method we show that some apparently different potentials based on exponential functions are equivalent. Present normalization method only requires…Francisco M. Fernández·Aug 2, 2026SaveLearn
A First Bound on the Moffat Energy and Thorium-229 Clock as a Probe of the Nonlocal Time-Energy Structure and a Proposed Experiment for the use of Nuclear Entanglement and Squeezed States to Test Nonlocal Quantum Field TheoryIn this paper we derive the nonlocal Time-Energy uncertainty principle and then apply the published 229Th nuclear clock data as a first probe of the nonlocality scale \(EM\). By using the…E. J. Thompson, Arvin Kouroshnia, J. W. Moffat et al.·Aug 2, 2026SaveLearn
Krylov-Lie Algebras for Variational Quantum Algorithms: Geometric, Depth-Aware Insights into Expressivity and TrainabilityVariational quantum algorithms (VQAs) are a leading approach to near-term quantum computation, but their utility is limited by barren plateaus and other pathologies in their loss landscapes. Existing…Anžej Margeta-Cacace·Aug 2, 2026SaveLearn
Tree-Structured Commutativity Packing in Adaptive Variational Quantum Simulation: Measurement Overhead and Representation LimitsWhile fermion-to-qubit isomorphisms are mathematically invariant under exact unitary statevector transformations, their physical implementation on noisy intermediate-scale quantum (NISQ) devices…Hermawan Kresno Dipojono·Aug 2, 2026SaveLearn
Uncertainty relations in classical and quantum theories of electromagnetismSharp uncertainty relations restricting the values of variances in the position space and in the momentum (wavevector) space are derived. They have the same form ΔrΔk 5/2 in the classical theory…Iwo Bialynicki-Birula, Zofia Bialynicka-Birula·Aug 2, 2026SaveLearn
Dynamic Synaptic Modulation of LMG Qubits populations in a Bio-Inspired Quantum BrainWe present a biologically inspired quantum neural network that encodes neuronal populations as fully connected qubits governed by the Lipkin-Meshkov-Glick (LMG) quantum Hamiltonian and modulated by a…J. J. Torres, E. Romera·Aug 2, 2026SaveLearn
A Survey of Bargmann Invariants: Geometric Foundations and ApplicationsBargmann invariants, a class of unitary-invariant quantities arising from the overlaps of quantum state vectors, provide a profound and unifying framework for understanding the relative geometry of…Lin Zhang, Bing Xie·Aug 2, 2026SaveLearn
Time-Efficient Quantum Many-Body State Synthesis and its Optimization via Warm Start StrategiesQuantum mechanical ground states of many-body systems can be important resources for various investigations: for quantum sensing, for benchmarking quantum hardware with classically solvable states,…Prashasti Tiwari, Dylan Lewis, Sougato Bose·Aug 2, 2026SaveLearn
Continuous-time quantum walks on a defective lattice: Boosting the spreading of delocalized states through Parrondo's strategyWe investigate the quantum transport of delocalized states in continuous-time quantum walks (CTQWs) on a one-dimensional lattice containing a single defect. The defect is modeled by assigning…João V. Cordeiro, Eduardo I. Duzzioni, Edgard P. M. Amorim·Aug 2, 2026SaveLearn
Orbit dimensions in linear and Gaussian quantum opticsWe study the dimension of the manifold of quantum states (called orbit) that a given bosonic state can reach under linear or quadratic Hamiltonian evolutions. That is, we investigate how many…Eliott Z. Mamon·Aug 2, 2026SaveLearn
Making the zeroth-order process fidelity independent of state preparation and measurement errorsIn this work, we demonstrate that the zero-fidelity, an approximation to the process fidelity, when combined with randomized benchmarking, becomes robust to state preparation and measurement (SPAM)…Yu-Hao Chen, Renata Wong, Hsi-Sheng Goan·Aug 2, 2026SaveLearn
Measurement-Based Loss Tolerance in Graph-GKP Codes through Syndrome-Resolved Pauli-Frame DecodingGraph codes offer multiple physical representatives of logical observables, while Gottesman-Kitaev-Preskill (GKP) codes retain analog information about bosonic displacement noise. We develop a causal…Seid Koudia, Symeon Chatzinotas·Aug 1, 2026SaveLearn
From minimal informationally complete measurements to orthocentric simplices and back againThe reconstruction of unknown quantum states via minimal informationally complete measurements (MICs) is a cornerstone of quantum tomography. Although the statistical properties of these measurements…Piotr Bereza, Wojciech Słomczyński, Anna Szymusiak·Aug 1, 2026SaveLearn
Quantum Speedups for Testing Similar MeansProperty testing of distributions is a central topic in information theory, learning theory, and statistics. While quantum algorithms are known to offer significant speedups for property testing of a…Chengshen Gao, Yongzhen Xu, Shenggen Zheng et al.·Aug 1, 2026SaveLearn
Non-Hermitian dynamics in a driven-dissipative and spatially correlated light-matter systemPure quantum states, as described in quantum mechanics textbooks, are ideal representations inevitably deteriorated in real systems by any dissipative connection to the environment. In this work we…Ruiyang Huang, Eliott Beraud, Antoine Glicenstein et al.·Aug 1, 2026SaveLearn
Coordinate space representation for quantum simulation of scalar field theoryQuantum computing provides a promising framework for the simulation of quantum field theories, where the computational cost depends both on the quantum algorithm employed and on the representation of…Gaetan Bardy, Matthieu Saubanere, Adrian Tanasa·Aug 1, 2026SaveLearn
Work Statistics of Autonomous Quantum Energy PumpsWe develop a terminal-resolved theory of work statistics for autonomous quantum energy pumps. By modeling the systems that supply and receive energy as explicit quantum terminals, the energy…Yang Peng·Aug 1, 2026SaveLearn
Breakdown of the optical saturation regime in molecular single-photon emittersSolid-state single organic molecules, such as dibenzoterrylene (DBT) in organic matrices, are prominent deterministic single-photon sources, usually modeled as effective two-level systems (TLS). We…Hugo Levy-Falk, Daniele De Bernardis, Elena Fanella et al.·Aug 1, 2026SaveLearn
Adaptive operator-generated subspaces for effective many-body HamiltoniansElectronic-structure and embedding workflows terminate in effective many-body Hamiltonians, whereas quantum eigensolver studies often start from hand-built qubit models. We present the Adaptive…Ginanjar Utama, Hermawan Kresno Dipojono·Aug 1, 2026SaveLearn
Multiparameter quantum estimation in a photon system induced by gravitational redshiftAs photons propagate through curved spacetime, gravitational effects become unavoidable. In particular, gravitational redshift can induce significant distortion in photon wave packets, making it…Wei Ye, Hui Cao, Songtao Zhang et al.·Aug 1, 2026SaveLearn
Cooperative Platoon Routing and Dispatching via Edge-Assisted Hybrid Quantum OptimizationCooperative platooning can reduce the energy use of Connected and Autonomous Vehicle (CAV) fleets, but the routing problem becomes difficult when vehicles must meet on the same road segments at…Talha Azfar, Ruimin Ke·Aug 1, 2026SaveLearn
What is electric charge?: Charge as a local observable in relativistic quantum field theoryIt is rather surprising that modern quantum physics does not appear to have provided any clear answer to the simple question ``what is electric charge?''. Even when the total charge operator…Hideyasu Yamashita·Aug 1, 2026SaveLearn
Trading Imaginary Time for Randomness in Ground State PreparationImaginary-time evolution (ITE) is a foundational method for ground state preparation on quantum computers. However, because ITE is non-unitary, existing implementations incur a sample complexity…Alvan Arulandu, John M. Martyn, Isaac L. Chuang·Aug 1, 2026SaveLearn
Sparse Quantum State Preparation with Sublinear T-CountWe study the fault-tolerant cost of preparing sparse quantum states, measured by T-count in the Clifford+T model. Here an n-qubit state is called s-sparse if it is supported on at most s…Jingquan Luo, Lvzhou Li·Aug 1, 2026SaveLearn