Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Approximate quantum error correction, eigenstate thermalization and the chaos bound
Shozab Qasim, Jason Pollack·Oct 30, 2025
Quantum error correction, thermalization, and quantum chaos are fundamental aspects of quantum many-body physics that have each developed largely independently, despite their deep conceptual overlap. In this work, we establish a precise link between ...
Witnessing Short- and Long-Range Nonstabilizerness via the Information Lattice
Yuliya Bilinskaya, Miguel F. Martínez, Soumi Ghosh +3 more·Oct 30, 2025
We study nonstabilizerness on the information lattice, and demonstrate that noninteger local information directly indicates nonstabilizerness. For states with a clear separation of short- and large-scale information, noninteger total information at l...
Spin-orbit coupled spin-boson model : A variational analysis
Sudip Sinha, Subhasis Sinha, Sushanta Dattagupta·Oct 30, 2025
The spin-boson (SB) model is a standard prototype for quantum dissipation, which we generalize in this work, to explore the dissipative effects on a one-dimensional spin-orbit (SO) coupled particle in the presence of a sub-ohmic bath. We analyze this...
Reusability of Quantum Catalysts
Haitao Ma, Yantong Li, Yingchun Kang +4 more·Oct 30, 2025
Quantum catalysts enable transformations that otherwise would be forbidden, offering a pathway to surpass conventional limits in quantum information processing. Among them, embezzling catalysts stand out for achieving near-perfect performance while t...
Quantum Random Number Generator with Internal Consistency Check and Public Verification
Rodrigo Piera, Gianluca De Santis, Agustin Sanchez +2 more·Oct 30, 2025
Quantum Random Number Generators provide true physical randomness based on quantum processes, essential for cryptographic and scientific applications. However, practical implementations face challenges in robustness and verifiability: ensuring that t...
Benchmarking quantum key distribution by mixing single photons and laser light
Yann Portella, Petr Steindl, Juan Rafael Álvarez +8 more·Oct 30, 2025
Quantum key distribution is a key application of quantum mechanics, shaping the future of privacy and secure communications. Many protocols require single photons, often approximated by strongly attenuated laser pulses. Here, we harness the emission ...
Dinosaur Photonic Crystal Cavity Interfaces for Color Center Coupling to Triangular Nanostructures
Julian M. Bopp, Lucca Valerius, Tim Schröder·Oct 30, 2025
Waveguide-coupled photonic crystal cavities with a triangular cross section fabricated by angled etching are suitable to interface embedded color centers with flying photonic qubits in quantum information applications. Moreover, their fabrication req...
Strong Kantorovich duality for quantum optimal transport with generic cost and optimal couplings on quantum bits
Gergely Bunth, József Pitrik, Tamás Titkos +1 more·Oct 30, 2025
We prove Kantorovich duality for a linearized version of a recently proposed non-quadratic quantum optimal transport problem, where quantum channels realize the transport. As an application, we determine optimal solutions of both the primal and the d...
Entanglement Superactivation in Multiphoton Distillation Networks
Rui Zhang, Yue-Yang Fei, Zhenhuan Liu +9 more·Oct 30, 2025
In quantum networks, after passing through noisy channels or information processing, residual states may lack sufficient entanglement for further tasks, yet they may retain hidden quantum resources that can be recycled. Efficiently recycling these st...
Single-Light-Pulse Driven Compact Atom Interferometry with Measurement Induced Large Momentum Transfer
Yinghang Jiang, Jiguo Wu, Junfan Zhu +2 more·Oct 30, 2025
We propose a fundamentally new design strategy of light-pulsed atom interferometry (LPAI) with a single atomic beam splitter. A traditional $π/2$-pulse Raman beam is employed to render a small momentum transfer at the initial state. After a short per...
Overcoming disorder in superconducting globally driven quantum computing
Riccardo Aiudi, Julien Despres, Roberto Menta +5 more·Oct 29, 2025
We study the impact of static disorder on a globally-controlled superconducting quantum computing architecture based on a quasi-two-dimensional ladder geometry [R. Menta et al., Phys. Rev. Research 7, L012065 (2025)]. Specifically, we examine how fab...
Hyperbolic Fracton Model, Subsystem Symmetry and Holography III: Extension to Generic Tessellations
Yosef Shokeeb, Ludovic D. C. Jaubert, Han Yan·Oct 29, 2025
We generalize the Hyperbolic Fracton Model from the $\{5,4\}$ tessellation to generic tessellations, and investigate its core properties: subsystem symmetries, fracton mobility, and holographic correspondence. While the model on the original tessella...
Double categories for adaptive quantum computation
Cihan Okay, Walker Stern, Redi Haderi +1 more·Oct 29, 2025
Quantum computation can be formulated through various models, each highlighting distinct structural and resource-theoretic aspects of quantum computational power. This paper develops a unified categorical framework that encompasses these models and t...
Symmetry and Asymmetry in Bosonic Gaussian Systems: A Resource-Theoretic Framework
Nikolaos Koukoulekidis, Iman Marvian·Oct 29, 2025
We study the interplay of symmetries and Gaussianity in bosonic systems, under closed and open dynamics, and develop a resource theory of Gaussian asymmetry. Specifically, we focus on Gaussian symmetry-respecting (covariant) operations, which serve a...
Large-scale implementation of quantum subspace expansion with classical shadows
Laurin E. Fischer, Daniel Bultrini, Ivano Tavernelli +1 more·Oct 29, 2025
Quantum subspace expansion (QSE) offers promising avenues to perform spectral calculations on quantum processors but comes with a large measurement overhead. Informationally complete (IC) measurements, such as classical shadows, were recently propose...
Photoelectric detection of single spins in diamond by optically controlled discharge of long-lived trap states
A. C. Ulibarri, D. J. McCloskey, D. Wang +3 more·Oct 29, 2025
Electrical detection methods for solid-state spins are attractive for quantum technologies, being readily chip-scalable and not subject to the small photon budgets of single emitters. However, realising electrical spin readout in wide-bandgap materia...
Controlling the Dynamical Evolution of Quantum Coherence and Quantum Correlations in $ e^{+}e^{-} \to Λ\barΛ$ Processes at BESIII
Elhabib Jaloum, Mohamed Amazioug·Oct 29, 2025
Quantum coherence, a cornerstone of quantum mechanics, is of paramount importance for quantum information protocols. However, maintaining coherence in elementary particle systems presents significant challenges. In this work, we investigate quantum c...
Generalized collective quantum tomography: algorithm design, optimization, and validation
Shuixin Xiao, Yuanlong Wang, Zhibo Hou +6 more·Oct 29, 2025
Quantum tomography is a fundamental technique for characterizing, benchmarking, and verifying quantum states and devices. It plays a crucial role in advancing quantum technologies and deepening our understanding of quantum mechanics. Collective quant...
Quantum Fisher Information With General Quantum Coherence in multi-dimensional quantum systems
Jun-Long Zhao, Li Yu, Ming Yang +1 more·Oct 29, 2025
Quantum metrology is a science about quantum measurements and it plays a key role in precision of quantum parameter estimation. Meanwhile, quantum coherence is an important quantum feature and quantum Fisher information (QFI) is an important indicato...
Design and Fabrication of Metal-Shielded Fiber-Cavity Mirrors for Ion-Trap Systems
Wei-Bin Chen, Ding Fang, Cheng-Hao Zhang +4 more·Oct 29, 2025
Trapped ions in micro-cavities constitute a key platform for advancing quantum information processing and quantum networking. By providing an efficient light-matter interface within a compact architecture, they serve as highly efficient quantum nodes...