Papers
Live trends in quantum computing research, updated daily from arXiv.
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Moments of quantum channel ensembles
Matthew Duschenes, Diego García-Martín, Zoë Holmes +1 more·Nov 16, 2025
Moments of ensembles of unitaries play a central role in quantum information theory as they capture the statistical properties of dynamics of systems with some form of randomness. Indeed, concepts such as approximate $t$-designs arise when comparing ...
Non-perturbative 2D spatial measurements of electric fields within a plasma sheath
Mykhailo Vorobiov, Rob Behary, Will Torg +9 more·Nov 15, 2025
We introduce an all-optical quantum-enhanced diagnostic for electric fields in low-temperature plasmas. Trace amounts of rubidium vapor, added to argon plasma, allow us to produce spectrally narrow electric field-sensitive optical resonances via quan...
Entanglement degradation of static black holes in effective quantum gravity
Xiaobao Liu, Wentao Liu, Shu-Min Wu·Nov 15, 2025
Quantum information science has been broadly explored in Einstein gravity and in various modified gravity theories; however, its extension to quantum gravity settings remains largely unexplored. Motivated by this gap, in this paper we investigate the...
Maximizing the nondemolition nature of a quantum measurement via an adaptive readout protocol
Arjen Vaartjes, Rocky Yue Su, Laura A. O'Neill +15 more·Nov 14, 2025
Quantum error correction (QEC) requires non-invasive measurements for fault tolerant quantum computing. Deviations from ideal quantum non-demolition (QND) measurements can disturb the encoded information. To address this challenge, we develop a reado...
A Compilation Framework for Quantum Circuits with Mid-Circuit Measurement Error Awareness
Ming Zhong, Zhemin Zhang, Xiangyu Ren +3 more·Nov 14, 2025
Mid-circuit measurement (MCM) provides the capability for qubit reuse and dynamic control in quantum processors, enabling more resource-efficient algorithms and supporting error-correction procedures. However, MCM introduces several sources of error,...
Observation and Manipulation of Optical Parametric Down-Conversion in the Langevin Regime
Yen-Ju Chen, Chun-Yuan Cheng, Tien-Dat Pham +4 more·Nov 13, 2025
Quantum fluctuation plays a key role in the parametric down-conversion in the Langevin regime. In this paper, we report the experimental realization of optical parametric down-conversion in the Langevin regime on a chip. By precisely controlling the ...
Photon transport and blockade based on non-Markovian interactions between a microring resonator and waveguide
Haijin Ding·Nov 13, 2025
We investigate photon transport and blockade based on the architecture where a waveguide is coupled to a microring resonator at two distinct points. This two-point coupling configuration between the waveguide and resonator gives rise to non-Markovian...
Direct Raman observation of the quantum metric in a quantum magnet
Chao-Fan Wang, Han Ge, Jun-Yang Chen +4 more·Nov 13, 2025
The quantum geometric tensor (QGT) unifies the Berry curvature (its imaginary part) and the quantum metric (its real part), yet Raman studies of chiral phonons have so far accessed only the former. We perform circularly polarized Raman spectroscopy o...
Tunable single-photon frequency converter in a waveguide with a giant V-type atom
Hongzheng Wu, Ge Sun, Jing Lu +1 more·Nov 13, 2025
We study the single-photon scattering in a one-dimensional (1D) waveguide coupled to one transition of a $V$-type giant atom (GA), whose other transition is coherently driven by an classical field. The inelastic scattering of single photons by the GA...
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...
Geometric foundations of thermodynamics in the quantum regime
Álvaro Tejero, Martín de la Rosa·Nov 13, 2025
In this work, we present a geometrical formulation of quantum thermodynamics based on contact geometry and principal fiber bundles. The quantum thermodynamic state space is modeled as a contact manifold, with equilibrium Gibbs states forming a Legend...
Robust Entanglement Dynamics in Driven Open Quantum Systems
Aqsa Mushtaq, Chaimae Banouni, Mahboob Ul Haq +1 more·Nov 13, 2025
We investigate the dynamics of key quantum correlations - Negativity (NG), Quantum Discord (QD), and Quantum-Memory-Assisted Entropic Uncertainty (QM-EUR) - in a bipartite two-qubit system under the influence of external pulses and various decoherenc...
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 ...
Local arrows of time in quantum many-body systems
Andrew G. Yates, Jordan Cotler, Nishad Maskara +1 more·Nov 12, 2025
We demonstrate that in quantum many-body systems, local arrows of time can differ from the global time $t$ induced by Hamiltonian evolution. That is, within a quantum many-body system, the flow of time can be relative to each observer or by proxy eac...
Geometry Induced Chiral Transport and Entanglement in $AdS_2$ Background
Kazuki Ikeda, Yaron Oz·Nov 12, 2025
We study the real-time chiral dynamics of Dirac fermions in AdS$_2$ and AdS$_2$ black hole backgrounds. The spacetime curvature generates a spin connection term, acting as an effective magnetic field and a position-dependent chiral chemical potential...
Green Function Invariants for Floquet Topological Superconductivity Induced by Proximity Effects
Mohamed Assili, Panagiotis Kotetes·Nov 12, 2025
We bring forward a Green function approach for the prediction of Floquet topological phases in driven superconductor-semiconductor hybrids. Although it is common to treat the superconducting component as a mere Cooper-pair reservoir, it was recently ...
Nonequilibrium Probes of Quantum Geometry in Gapless Systems
Bastien Lapierre, Per Moosavi, Blagoje Oblak·Nov 12, 2025
Much of our understanding of gapless quantum matter stems from low-energy descriptions using conformal field theory. This is especially true in 1+1 dimensions, where such theories have an infinite-dimensional parameter space induced by their conforma...
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...
Influence of Modulation Frequency Stabilization on Spectral Noise of Electromagnetically Induced Transparency
Hou Jinghua, Su Nan, Liu Yao +3 more·Nov 12, 2025
The conversion of the modulation signal from the coupling light to the probe light and the conversion of the additional phase noise from the coupling light to the amplitude noise of the probe light in the electromagnetically induced transparency (EIT...
Multipolar and nonlocal effects in plasmon-mediated entanglement generation
Luke C. Ugwuoke, Tjaart P. J. Krüger, Mark S. Tame·Nov 12, 2025
The generation of quantum entanglement is important for a wide range of quantum technology protocols. In nanophotonics, a promising platform for quantum technologies, entanglement generation via plasmon-mediated coupling in quantum dot qubits is ofte...