Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Entanglement Structure of Nonlocal Field Theories
Reza Pirmoradian, M. Hossein Bek-Khoshnevis, Sadaf Ebadi +1 more·Nov 13, 2025
Nonlocal interactions are known to generate volume-law entanglement entropy. However, their deeper impact on the fine structure of quantum correlations remains a key open question. In this work, we explore a bosonic nonlocal field theory, examining c...
Lévy-Khintchine Structure Enables Fast-Forwardable Lindbladian Simulation
Minbo Gao, Zhengfeng Ji, Chenghua Liu·Nov 13, 2025
Simulation of open quantum systems is an area of active research in quantum algorithms. In this work, we revisit the connection between Markovian open-system dynamics and averages of Hamiltonian real-time evolutions, which we refer to as Hamiltonian ...
High-Energy Decays and Weak Quantum Measurements
Alan J. Barr·Nov 13, 2025
High-energy particle decays naturally realise informationally weak measurements of quantum spin. Decay kinematics act as continuous pointer variables whose overlapping angular distributions encode partial, non-projective information about the parent ...
Improved Offline Reinforcement Learning via Quantum Metric Encoding
Outongyi Lv, Yewei Yuan, Nana Liu·Nov 13, 2025
Reinforcement learning (RL) with limited samples is common in real-world applications. However, offline RL performance under this constraint is often suboptimal. We consider an alternative approach to dealing with limited samples by introducing the Q...
Competing Localizations on Disordered Non-Hermitian Random Graph Lattice
S Rahul, A Harshitha·Nov 13, 2025
Phase transitions in one-dimensional lattice systems are well established and have been extensively studied within both Hermitian and non-Hermitian frameworks. In this work, we extend this understanding to a more general setting by investigating loca...
Interaction as Interference: A Quantum-Inspired Aggregation Approach
Pilsung Kang·Nov 13, 2025
Classical approaches often treat interaction as engineered product terms or as emergent patterns in flexible models, offering little control over how synergy or antagonism arises. We take a quantum-inspired view: following the Born rule (probability ...
Improved coherence time of a non-Hermitian qubit in a $\mathcal{PT}$-symmetric Environment
Duttatreya, Ipsika Mohanty, Sanjib Dey·Nov 13, 2025
Quantum computing's potential for exponential speedup is fundamentally limited by decoherence, a phenomenon arising from environmental interactions. Non-Hermitian quantum mechanics, particularly $PT$-symmetric systems, offers a novel framework for ex...
Quantum Period-Finding using One-Qubit Reduced Density Matrices
Marco Bernardi·Nov 13, 2025
The quantum period-finding (QPF) algorithm can compute the period of a function exponentially faster than the best-known classical algorithm. In standard QPF, the output state has a primary contribution from $r$ high-probability bit strings, where $r...
Constrained Shadow Tomography for Molecular Simulation on Quantum Devices
Irma Avdic, Yuchen Wang, Michael Rose +4 more·Nov 12, 2025
Quantum state tomography is a fundamental task in quantum information science, enabling detailed characterization of correlations, entanglement, and electronic structure in quantum systems. However, its exponential measurement and computational deman...
Mutual information as a measure of renormalizability
Brenden Bowen, Albert Farah, Spasen Chaykov +1 more·Nov 12, 2025
Renormalization is an essential technique in field-theoretic descriptions of natural phenomena, where the absence of a UV-complete description yields an abundance of divergent quantities. While the renormalization prescription has been thoroughly ref...
Pure-State Quantum Tomography with Minimal Rank-One POVMs
Dan Edidin, Ivan Gonzalez, Itzhak Tamo·Nov 12, 2025
Quantum state tomography seeks to reconstruct an unknown state from measurement statistics. A finite measurement (POVM) is \emph{pure-state informationally complete} (PSI-Complete) if the outcome probabilities determine any pure state up to a global ...
Adaptive Estimation of Drifting Noise in Quantum Error Correction
Devansh Bhardwaj, Evangelia Takou, Yingjia Lin +1 more·Nov 12, 2025
Advancing quantum information processors and building fault-tolerant architectures rely on the ability to accurately characterize the noise sources and suppress their impact on quantum devices. In practice, noise often drifts over time, whereas conve...
A hybrid variational quantum circuit approach for stabilizer states classifiers
Hamna Aslam, Frédéric Holweck·Nov 12, 2025
Entanglement classification of pure multipartite quantum states is a challenging problem in quantum information theory that can be mathematically stated as orbit classification for some given group action on the ambient Hilbert space. The group actio...
Noise-Induced Equalization in quantum learning models
Francesco Scala, Giacomo Guarnieri, Aurelien Lucchi·Nov 12, 2025
Quantum noise is known to strongly affect quantum computation, thus potentially limiting the performance of currently available quantum processing units. Even learning models based on variational quantum algorithms, which were designed to cope with t...
Enhanced spectral range of strain-induced tuning of quantum dots in circular Bragg grating cavities
Ivan Gamov, Matthias Sauter, Samuel Huber +5 more·Nov 12, 2025
Tunable sources of entangled and single photons are essential for implementing entanglement-based quantum information protocols, as quantum teleportation and entanglement swapping depend on photon indistinguishability. Tunable devices are fabricated ...
Private Remote Phase Estimation over a Lossy Quantum Channel
Farzad Kianvash, Marco Barbieri, Matteo Rosati·Nov 12, 2025
Private remote quantum sensing (PRQS) aims at estimating a parameter at a distant location by transmitting quantum states on an insecure quantum channel, limiting information leakage and disruption of the estimation itself from an adversary. Previous...
Research progress of artificial intelligence empowered quantum communication and quantum sensing systems
Jiaxin Xu, Lechen Xu, Jingyang Liu +2 more·Nov 12, 2025
Quantum communication and quantum sensing, which leverage the unique characteristics of quantum systems, enable information-theoretically secure communication and high-precision measurement of physical quantities. However, they both face numerous cha...
Room-Temperature Electrical Readout of Spin Defects in van der Waals Materials
Shihao Ru, Liheng An, Haidong Liang +14 more·Nov 12, 2025
Negatively charged boron vacancy ($\mathrm{V_B^-}$) in hexagonal boron nitride (hBN) is the most extensively studied room-temperature quantum spin system in two-dimensional (2D) materials. Nevertheless, the current effective readout of $\mathrm{V_B^-...
Information Processing in Quantum Thermodynamic Systems: an Autonomous Hamiltonian Approach
Shou-I Tang, Emery Doucet, Akram Touil +2 more·Nov 12, 2025
Extending 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 the second law of thermodynamics to account for inf...
Probing short-range gravity using quantum reflection
J. Boynewicz, C. A. Sackett·Nov 11, 2025
Quantum reflection occurs when ultra-cold atoms are incident on a material surface with sufficiently low velocity. The reflecting matter wave can interfere with the incident wave to form a detectable pattern, and this pattern contains information abo...