Scrambling in the charging of quantum batteries

IF 5.5 1区 物理与天体物理 Q1 Physics and Astronomy
Sebastián V. Romero, Yongcheng Ding, Xi Chen, Yue Ban
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引用次数: 0

Abstract

Exponentially fast scrambling of an initial state characterizes quantum chaotic systems. Given the importance of quickly populating higher energy levels from low-energy states in quantum battery charging protocols, this work investigates the role of quantum scrambling in quantum batteries and its effect on optimal power and charging times by means of the Sachdev-Ye-Kitaev model, a maximally-chaotic black hole physics model that has been recently proposed as a quantum battery. We adopt a bare representation with normalized bandwidths to suppress system energy dependence. To our knowledge, this is the first in-depth exploration of quantum scrambling in the context of quantum batteries. By analyzing the dynamics of out-of-time-order correlators, our findings indicate that quantum scrambling does not necessarily lead to faster charging, despite its potential for accelerating the process.

扰乱量子电池的充电
量子混沌系统的特征是初始状态的指数级快速置乱。考虑到在量子电池充电协议中从低能态快速填充更高能级的重要性,本工作通过Sachdev-Ye-Kitaev模型(最近作为量子电池提出的最大混沌黑洞物理模型)研究了量子乱置在量子电池中的作用及其对最佳功率和充电时间的影响。我们采用带归一化带宽的裸表示来抑制系统能量依赖性。据我们所知,这是第一次在量子电池的背景下深入探索量子置乱。通过分析非时序相关器的动力学,我们的研究结果表明,量子置乱并不一定会导致更快的充电,尽管它有加速充电过程的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of High Energy Physics
Journal of High Energy Physics 物理-物理:粒子与场物理
CiteScore
10.30
自引率
46.30%
发文量
2107
审稿时长
1.5 months
期刊介绍: The aim of the Journal of High Energy Physics (JHEP) is to ensure fast and efficient online publication tools to the scientific community, while keeping that community in charge of every aspect of the peer-review and publication process in order to ensure the highest quality standards in the journal. Consequently, the Advisory and Editorial Boards, composed of distinguished, active scientists in the field, jointly establish with the Scientific Director the journal''s scientific policy and ensure the scientific quality of accepted articles. JHEP presently encompasses the following areas of theoretical and experimental physics: Collider Physics Underground and Large Array Physics Quantum Field Theory Gauge Field Theories Symmetries String and Brane Theory General Relativity and Gravitation Supersymmetry Mathematical Methods of Physics Mostly Solvable Models Astroparticles Statistical Field Theories Mostly Weak Interactions Mostly Strong Interactions Quantum Field Theory (phenomenology) Strings and Branes Phenomenological Aspects of Supersymmetry Mostly Strong Interactions (phenomenology).
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