Variance-Reduced Trajectory Unravelings for GPU Noisy Quantum-Circuit Simulation: Characterization and a Qiskit-Aer Integration GapMonte-Carlo trajectory (quantum-jump) methods are the practical route to simulating noisy quantum circuits once the exact density-matrix method is precluded by its 4n memory cost. Their bottleneck…Chun-Yeol You·Jul 20, 2026SaveLearn
Active Optical Frequency Measurements with Superradiance Prolonged by a Modulated Magnetic FieldSuperradiant emission from long-lived excited states of an atomic ensemble confined in an optical cavity constitutes a practical source of light with narrow linewidth. In the pulsed regime, however,…Huihui Yu, Shi-Lei Su, Chongxin Shan et al.·Jul 20, 2026SaveLearn
Fully-connected three-mode squeezed vacuum: Gaussian entanglement, steering, and collective photon subtractionWe investigate a fully-connected three-mode squeezed vacuum (FC-C3MSV) state, where all three modes are pairwise coupled through nonlinear interactions in a triangle (K3) topology. Using the…Manjia Mai, Jifeng Sun, Teng Zhao et al.·Jul 20, 2026SaveLearn
Spatial nonlocality imaging via metasurfaceBell nonlocality is both a defining signature of entanglement and a key quantum information resource. However, visualizing and certifying nonlocal correlations across a spatially multimode photonic…Jian Li, Zi-Mu Fan, Qing-Yuan Wu et al.·Jul 20, 2026SaveLearn
Single-atom sensor for low-frequency electric fieldPrecision measurement of low-frequency electric field (LFEF) signals with frequency from 30 kHz to 300 kHz is crucial for advancing both fundamental science and practical applications, owing to their…Quan Yuan, Shuang-Qing Dai, Tai-Hao Cui et al.·Jul 20, 2026SaveLearn
Temporal Diffraction Grating for Engineered Superconducting Qubit DissipationParametric frequency modulation is a standard tool in superconducting circuits for activating tunable interactions and implementing quantum gates. Here, we engineer dissipation in a flux-tunable…Pratik J. Barge, Kater W. Murch·Jul 20, 2026SaveLearn
Lie-Group Mode Connectivity in Quantum Machine Learning from a Dynamical Lie Algebra PerspectiveMode connectivity has been widely studied in classical machine learning as a geometric property of low-loss regions in parameter space. In quantum machine learning (QML), however, the physically…Hiroshi Ohno·Jul 20, 2026SaveLearn
Neural Gauge-P Representation for Open Quantum Dynamics of Interacting BosonsSimulating the nonequilibrium dynamics of interacting open quantum systems remains challenging beyond small system sizes. Quantum phase-space representations provide a scalable approach, but their…Xiaodong Cao, Zhicheng Zhong·Jul 20, 2026SaveLearn
LLM-Driven Cross-Paradigm Design for Quantum Optimal ControlQuantum optimal control (QOC) underpins adiabatic quantum computation, quantum annealing, and quantum state engineering, yet practical deployment is fundamentally bottlenecked by strict hardware…Yu-Qin Chen, Shi-Xin Zhang·Jul 20, 2026SaveLearn
The finite key effect of side-channel-secure quantum key distribution beyond post-selection techniqueBy applying the framework of entropic uncertainty relation (EUR) and the Quantum Leftover Hash Lemma (QLHL), we introduce a security-proof method for variable-length side-channel-secure (SCS) quantum…Cong Jiang, Zong-Wen Yu, Xiang-Bin Wang·Jul 20, 2026SaveLearn
Parameterized Quantum Circuit Semantics Through Enriched CategoriesIt is well-known that combinatorial circuits are modeled mathematically by string diagrams in monoidal categories. Given a gate set Σ, the circuits over Σ can be thought of as string diagrams in…Neil J. Ross, Scott Wesley·Jul 20, 2026SaveLearn
LDGM-Based Quantum Codes for Fault-Tolerant Quantum ComputationWe construct a new family of Calderbank-Shor-Steane (CSS) codes using the generator and parity-check matrices of Low-Density Generator Matrix (LDGM) codes, with row operations applied to both…Yumin Li, Kejing Liu, Hanqing Lou et al.·Jul 20, 2026SaveLearn
Sail membranes for optomechanical accelerometryStrained membrane resonators have emerged as a promising platform for optomechanical accelerometry; however, the desired combination of low frequency and high Q-mass product requires a rethinking…Atkin D. Hyatt, Mitul Dey Chowdhury, Mahir Chowdhury et al.·Jul 20, 2026SaveLearn
Towards Quantum Network Performance Metrics: Challenges and DemonstrationAs quantum networks move toward practical deployment, standardized performance monitoring becomes essential. This article proposes a structured monitoring framework for quantum networks with…Mohamed Shaban, Mariam Kiran, Muhammad Ismail·Jul 20, 2026SaveLearn
Thermodynamics of Quantum Reservoir ComputingQuantum reservoir computing provides a framework for processing complex temporal data, yet its fundamental computational and energetic limits remain unresolved. Here, we establish a non-equilibrium…Lixiang Ding, Xingze Qiu·Jul 20, 2026SaveLearn
An ultralow-loss integrated photonic platform for discrete-variable quantum information processingPhotonic integrated circuits offer a scalable and robust route toward quantum information technologies by consolidating photon sources and linear optical networks onto compact, wafer-manufacturable…Ruiyang Chen, Zeying Zhong, Sanli Huang et al.·Jul 20, 2026SaveLearn
Near-Optimal Learning of Local LindbladiansWe study the problem of learning local Lindbladians from black-box access to the physical evolution, where the goal is to estimate all Hamiltonian and dissipative coefficients. For local Lindbladians…Itai Arad, Zhili Chen, Naixu Guo et al.·Jul 20, 2026SaveLearn
Giant third-order polarization rotation via wave-mixing-induced symmetry breaking in a Rydberg-EIT mediumWe investigate how wave-mixing (WM)-induced symmetry breaking leads to giant third-order polarization rotation of a weak probe field in a Rydberg electromagnetically induced transparency (EIT)…Lintian Luo, Yan Li, Chengjie Zhu et al.·Jul 20, 2026SaveLearn
Answer Partitions and Oracle Access Determine Quantum Query ComplexityAn answer partition specifies which oracle instances share an output, while query complexity also depends on how those instances are accessed. We formulate exact one-query answer-partition resolution…Karl Svozil·Jul 20, 2026SaveLearn
Pulse Shaping for Superconducting QubitsHigh-fidelity control of superconducting qubits requires carefully shaped microwave pulses to avoid several different kinds of error at once. This article is a pedagogical bridging text aimed at…Animesh Patra, Ankur Raina·Jul 20, 2026SaveLearn
Hybrid physical/logical zero-noise extrapolation with limited logical executionsPartially error-corrected logical executions are expected to become available before fully fault-tolerant quantum computation, but such executions usually take much longer runtime than physical,…D. V. Babukhin, W. V. Pogosov·Jul 20, 2026SaveLearn
Impact of Topology on Multipartite Entanglement Distribution Protocols in Quantum NetworksQuantum networks will rely on entanglement distribution to enable multi-user applications such as distributed quantum computing and cryptography. While multipartite entanglement distribution routing…Jazz E. Z. Ooi, Evan Sutcliffe, Alejandra Beghelli·Jul 20, 2026SaveLearn
Repulsive Gravitational Force as a Witness of the Quantum Nature of GravityWe show that a single spatially superposed 'source' mass acting on a 'probe' matter wavepacket can reveal the quantum nature of the gravitational field. For this we use a specific…Pablo L. Saldanha, Chiara Marletto, Vlatko Vedral·Jul 20, 2026SaveLearn
Hybrid Method of Efficient Simulation of Physics Applications for a Quantum ComputerQuantum chemistry and materials science are among the most promising areas for demonstrating algorithmic quantum advantage and quantum utility due to their inherent quantum mechanical nature. Still,…Carla Rieger, Albert T. Schmitz, Gehad Salem et al.·Jul 20, 2026SaveLearn
Learning Volterra Memory Kernels for Non-Markovian Qubit DynamicsWe develop a data-driven framework for identifying non-Markovian equations of motion for open quantum systems, demonstrated here for qubit-environment dynamics. Starting from the Nakajima-Zwanzig…Jimmie Adriazola, Katarzyna Roszak·Jul 20, 2026SaveLearn