Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Optical Downlink Modeling for LEO and MEO Satellites under Atmospheric Turbulence with a Quantum State Tomography Use Case
Artur Czerwinski, Jakub J. Borkowski, Saeed Haddadi·Dec 15, 2025
This paper presents a comprehensive analysis of the link budget for free-space optical systems involving Low Earth Orbit (LEO) and Medium Earth Orbit (MEO) satellites. We develop a detailed model of the satellite-to-ground channel that accounts for t...
Universal Statistics of Measurement-Induced Entanglement in Tomonaga-Luttinger liquids
Kabir Khanna, Romain Vasseur·Dec 15, 2025
We study the statistics of measurement-induced entanglement (MIE) after partial measurement on a class of one-dimensional quantum critical states described by Tomonaga-Luttinger liquids at low energies. Using a replica trick to average over measureme...
Deriving the Eigenstate Thermalization Hypothesis from Eigenstate Typicality and Kinematic Principles
Yucheng Wang·Dec 15, 2025
The eigenstate thermalization hypothesis (ETH) provides a powerful framework for understanding thermalization in isolated quantum many-body systems, yet a complete and conceptually transparent derivation has remained elusive. In this work, we derive ...
Slowing and Storing Microwaves in a Single Superconducting Fluxonium Artificial Atom
Ching-Yeh Chen, Shih-Wei Lin, Ching-Ping Lee +3 more·Dec 15, 2025
Three-level Lambda systems provide a versatile platform for quantum optical phenomena such as Electromagnetically Induced Transparency (EIT), slow light, and quantum memory. Such Lambda systems have been realized in several quantum hardware platforms...
Quantum critical dynamics and emergent universality in decoherent digital quantum processors
Brendan Rhyno, Swarnadeep Majumder, Smitha Vishveshwara +1 more·Dec 15, 2025
Understanding how noise influences nonequilibrium quantum critical dynamics is essential for both fundamental physics and the development of practical quantum technologies. While the quantum Kibble-Zurek (QKZ) mechanism predicts universal scaling dur...
Intense-Laser Nondipole-Induced Symmetry Breaking in Solids
Asger Weeth, Lars Bojer Madsen·Dec 15, 2025
High-harmonic spectroscopy in solids gives insight into the inner workings of solids, such as reconstructing band structures or probing the topological phase of materials. High-harmonic generation (HHG) is a highly non-linear phenomena and simulation...
Measurement-Induced Perturbations of Hausdorff Dimension in Quantum Paths
You-Wei Ding, Yen Chin Ong, Hao Xu·Dec 15, 2025
In a seminal paper, Abbott et al. analyzed the relationship between a particle's trajectory and the resolution of position measurements performed by an observer at fixed time intervals. They predicted that quantum paths exhibit a universal Hausdorff ...
Calibrated Plane--Convex Microcavity for Room-Temperature Polaritons with Geometric \(g\)-Scaling
Ling-Qi Huang, Shih-Chung Chen, Chia-Hao Lin +7 more·Dec 14, 2025
We present a plane--convex open microcavity that supports room-temperature polariton spectroscopy and offers a simple geometric handle on the coupling rate. The effective length ($L_{\mathrm{eff}}$) is absolutely calibrated from the free-spectral ran...
Imaging Walk-Off Driven Distortions in EPR Photon Pair Correlations
Christian Howard, Roohollah Ghobadi, Nazanin Dehghan +2 more·Dec 13, 2025
Spontaneous parametric down-conversion is the primary source of position-correlated and momentum-anticorrelated photon pairs that form the canonical Einstein-Podolsky-Rosen (EPR) state. Their transverse spatial correlations are usually analyzed withi...
Electron-positron pair creation induced by multi-pulse train of electric fields: effect of randomness in time-delay
Deepak Sah, Manoranjan P. Singh·Dec 12, 2025
We investigate the creation of electron-positron pairs (EPPs) in a sequence of alternating-sign, time-dependent electric field pulse trains by solving the quantum Vlasov equations. Specifically, we focus on Sauter-like pulse trains with random time d...
A Room-Temperature Extreme High Vacuum System for Trapped-Ion Quantum Information Processing
Lewis Hahn, Nikhil Kotibhaskar, Fabien Lefebvre +4 more·Dec 12, 2025
We present a room-temperature Extreme High Vacuum (XHV) system engineered to support the long-duration operation of a trapped-ion quantum processor. Background-gas collisions impose limitations on trapped-ion performance and scalability by interrupti...
CNOT gates in inductively coupled multi-fluxonium systems
Valeria Díaz Moreno, Nikola D. Dimitrov, Vladimir E. Manucharyan +1 more·Dec 12, 2025
High-fidelity two-qubit gates have been demonstrated in systems of two fluxonium qubits; however, the realization of scalable quantum processors requires maintaining low error rates in substantially larger architectures. In this work, we analyze a sy...
Real-Time Polarization Control for Satellite QKD with Liquid-Crystal Beacon Stabilization
Ondrej Klicnik, Alessandro Zannotti, Yannick Folwill +3 more·Dec 12, 2025
Polarization instability is a critical challenge for polarization-entangled satellite quantum key distribution (QKD), where atmospheric effects and platform motion continuously distort photon polarization. To maintain entanglement fidelity, these tra...
Thermal interaction-free ghost imaging
Shun Li, Jing-Yang Xiao Feng, Xiu-Qing Yang +4 more·Dec 12, 2025
We propose an interaction-free ghost imaging scheme based on a thermal light source. By utilizing the quantum Zeno-like effect, our approach significantly reduces the light dose absorbed by the sample, thereby effectively preventing sample damage ind...
Twin-paradox and Entanglement
K. Hari, Subhajit Barman, Dawood Kothawala·Dec 11, 2025
We study the quantum version of the classical twin paradox in special relativity by replacing the twins with quantum detectors, and studying the transitions and entanglement induced by coupling them to a quantum field. We show that the \textit{change...
Rapid multi-mode trapped-ion laser cooling in a phase-stable standing wave
Zhenzhong Xing, Hamim Mahmud Rivy, Vighnesh Natarajan +3 more·Dec 11, 2025
Laser cooling is fundamental to quantum computing and metrology using atomic systems. Precise control often requires cooling atoms' motional degrees of freedom to the quantum ground state, imposing operation time and architectural limitations particu...
Metrics on completely positive maps via noncommutative geometry
Are Austad, Erik Bédos, Jonas Eidesen +2 more·Dec 11, 2025
We study methods of inducing metrics on unital completely positive maps by employing seminorms arising in noncommutative geometry. Our main approach relies on the development of an infinite-dimensional $C^*$-algebraic analogue of the Choi-Jamiołkowsk...
Understanding Surface-Induced Decoherence of NV Centers in Diamond
Jonah Nagura, Mykyta Onizhuk, Giulia Galli·Dec 11, 2025
Nitrogen vacancy centers (NV) in proximity to diamond surfaces are promising nanoscale quantum sensors. However, their coherence properties are negatively affected by magnetic and electric surface noise, whose origin and detailed impact have remained...
A Cryogenic Muon Tagging System Based on Kinetic Inductance Detectors for Superconducting Quantum Processors
Ambra Mariani, Laura Cardani, Mustafa Bal +16 more·Dec 11, 2025
Ionizing radiation has emerged as a potential limiting factor for superconducting quantum processors, inducing quasiparticle bursts and correlated errors that challenge fault-tolerant operation. Atmospheric muons are particularly problematic due to t...
Chaos, Entanglement and Measurement: Field-Theoretic Perspectives on Quantum Information Dynamics
Anastasiia Tiutiakina·Dec 11, 2025
This work develops tools to understand how quantum information spreads, scrambles, and is reshaped by measurements in many-body systems. First, I study scrambling and pseudorandomness in the Brownian Sachdev-Ye-Kitaev (SYK) model, quantifying pseudor...