Quantum Separability in Polynomial TimeThe quantum separability problem asks whether a bipartite density matrix is separable or is η-far from every separable state. We give a randomized polynomial-time algorithm for this problem for…Giulio Malavolta·Jul 26, 2026SaveLearn
Can PCE solve the factorisation problem via optimisation?The ongoing progress in quantum technologies has fueled a sustained exploration of their potential applications across various domains, particularly in computational problems that are considered…Fernando Alonso, Colomán Samprón, Jacobo Veiga et al.·Jul 26, 2026SaveLearn
Fixed points in de Finetti hierarchiesDe Finetti theorems convert permutation symmetry into approximate mixtures of product states and thereby justify a wide range of reductions in classical and quantum statistics. In this work we study…Gereon Kossmann, Julius A. Zeiss·Jul 26, 2026SaveLearn
Qutrit-Based Neural Quantum Kernels for Classification TasksNeural quantum kernels (NQKs) construct quantum kernels by pretraining a quantum neural network (QNN) and subsequently reusing the trained circuit as a task-adapted embedding. Extending this…Camila Cristiano-Romero, Pablo Rodriguez-Grasa, Mikel Sanz·Jul 26, 2026SaveLearn
Mitigation of Measurement-Induced State Transitions via a Fast-Load and Fast-Clear ReadoutHigh-fidelity and rapid qubit readout is essential for superconducting quantum processors, typically realized through the quantum non-demolition (QND) dispersive interaction within a qubit-resonator…Wei-En Lin, Li-Chieh Hsiao, Chen-Hsun Ma et al.·Jul 26, 2026SaveLearn
Neural Network Learning of One-Bit Protocols for Qubit Measurement SimulationCommunication complexity provides a natural framework for quantifying the classical resources required to reproduce quantum statistics. In the qubit prepare-and-measure scenario, two classical bits…Josep Escrig, Mani Zartab, Giulio Gasbarri et al.·Jul 26, 2026SaveLearn
Optimal Dynamic Cooling of Multiple QubitsWe solve the closed-system problem of cooling M qubits, selected from N identical thermal qubits, to the lowest common local temperature allowed by unitarity. The optimal protocol consists of two…Mattia Reda, Massimiliano Sacchi, Chiara Macchiavello et al.·Jul 26, 2026SaveLearn
Effect of classical noises on the coherent population trapping based on the Green's function approach to the multiplicative stochastic processesInspired by the Green's function (GF) approach in quantum field theory (QFT) and many body physics, we have developed a mathematical formalism to investigate classical multiplicative stochastic…M. Mirzaee, B. Askari, Ali Motazedifard et al.·Jul 26, 2026SaveLearn
Performance and Stability of Quantum Krylov Diagonalization for the Hubbard ModelQuantum Krylov diagonalization (QKD) has emerged as a promising hybrid quantum-classical approach for estimating ground-state properties of many-body systems on near-term quantum devices. In this…Mohammad Mirzakhani, Hyukgun Kwon, Kyungsun Moon·Jul 26, 2026SaveLearn
An Integrated DFT-Wannier-Quantum Embedding Pipeline for Strongly Correlated Materials: Scaling Benchmarks in Li-hBNThe seamless integration of Density Functional Theory (DFT) with quantum variational algorithms is essential for the predictive simulation of strongly correlated materials. In this work, we present…Hermawan Kresno Dipojono·Jul 26, 2026SaveLearn
Generalized Mermin Inequalities for Benchmarking Large-Scale GHZ StatesMultipartite Bell tests provide a correlation-only route to benchmarking quantum processors, but their application at large scales is hindered by the rapid decay of many-body correlators under noise…Jianbin Cai, Junxiang Huang, Fynn Otto et al.·Jul 26, 2026SaveLearn
Quantum Speed Limits and the Ultimate Scaling of the Quantum SensorsQuantum metrology promises sensitivity beyond classical strategies, yet it remains unsettled how quantum-enabled precision should scale with physical resources and how to interpret quantum advantage.…Yusef Maleki·Jul 26, 2026SaveLearn
A Probabilistic Representation for Multi-State Discrete-time Quantum WalksBuilding upon the pioneering framework of Vu (2026), we construct a probabilistic representation for three-state discrete-time quantum walks on integer lattices and validate it through empirical…Hoang Vu·Jul 26, 2026SaveLearn
One Aperture, Two Colors: Depth-Allocated Bilayer Silicon Nitride Gratings for Trapped-Ion AddressingScaling multicolor quantum control on chip presents a geometric conflict: each added wavelength traditionally requires another routing corridor, emitter, and electrode opening, consuming trap-surface…Gyanendra Yadav·Jul 26, 2026SaveLearn
Photon pair antibunching and second-order correlations between pair eventsWe introduce the pair second-order correlation function gpairs(2)= (P)2P2 / PP 2,…Chien-Chang Chen, Ite A. Yu, Hsi-Sheng Goan·Jul 26, 2026SaveLearn
A strong converse for stabilizer codes over Pauli channels via the blowing-up lemmaWe prove a strong converse for quantum communication over Pauli channels within the class of stabilizer codes. If a code whose code space is a full joint eigenspace of a stabilizer group transmits…Marco Tomamichel·Jul 26, 2026SaveLearn
A partial-trace matrix inequality and Werner-state distillabilityMotivated by the equivalent partial-trace formulations of Werner-state distillability [P. Costa Rico, Lett. Math. Phys. 115, 47 (2025); S.-Y. Qi et al., Phys. Rev. A 110, 012406 (2024)], we prove a…Zhiwei Song, Lin Chen·Jul 26, 2026SaveLearn
Multiconfigurational Mixed Quantum-Classical Approach for Correlated Many-Body DynamicsIn this work, we introduce a multiconfigurational mixed quantum-classical many-body approach for simulating the finite-temperature correlated multi-exciton dynamics in the presence of phonon-induced…Pritha Ghosh, Rajanya Sarkar, Arkajit Mandal·Jul 26, 2026SaveLearn
Highly integrated quantum key distribution transmitter enabled by silicon photonicsQuantum key distribution (QKD) provides information-theoretic security independent of computational assumptions, yet the bulk and cost of current systems hinder large-scale deployment. Although…Rende Liu, Yan-Lin Tang, Cheng-Guang Dong et al.·Jul 26, 2026SaveLearn
Performance Analysis of QAOA Across Distributed Quantum Network Topologies Using SwitchQNetQuantum data-center (QDC) architectures aim to scale distributed quantum computing (DQC) by interconnecting multiple quantum processing units (QPUs), but their performance depends strongly on how…Samanvay Sharma, Siyuan Niu, Amin Taherkhani et al.·Jul 26, 2026SaveLearn
Optimal Quantum Metrology for Probing the Unruh Effect with Uniformly Accelerated Two-Level AtomsWe develop a quantum metrological framework for optimizing the probing of the Unruh effect using uniformly accelerated two-level atomic probes. The acceleration-dependent factor generated during the…Yao Jin·Jul 26, 2026SaveLearn
Structure-Agnostic Unitary Learning from Quantum Observable Dynamics with Application to Hamiltonian IdentificationWe present a variational algorithm for learning an unknown quantum unitary from time-series observable measurements, with no structural assumption about the target. The core separation: a…Mohamed Berkani·Jul 26, 2026SaveLearn
Genuine Global Kochen-Specker Contextuality as Classical Coordination CostWe formulate classical simulation of quantum correlations as coordination across a spacetime separator. All past-dependent information capable of influencing the future must cross the separator…Ming Yang·Jul 26, 2026SaveLearn
Aligning Quantum Operators with Large Language ModelsCan Large Language Models (LLMs) understand and reason about quantum operators? Despite their remarkable capabilities in mathematics and symbolic reasoning, LLMs remain inherently blind to quantum…Rogerio Feris, Yunchao Liu, Pengyuan Li et al.·Jul 26, 2026SaveLearn
A2QTGN: Adaptive Amplitude Quantum-Integrated Temporal Graph Network for Dynamic Link PredictionDynamic link prediction is important for modeling evolving interactions in social, communication, financial, and transportation networks. Classical temporal graph models capture changes over time,…Nouhaila Innan, M. Murali Karthick, Simeon Kandan Sonar et al.·Jul 26, 2026SaveLearn