Scrambling in the Charging of Quantum Batteries

Sebastián V. Romero, Yongcheng Ding, Xi Chen, Yue Ban
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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 Letter investigates the role of quantum scrambling in quantum batteries and its effect on optimal power and charging times. 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.
量子电池充电中的杂乱无章
指数级快速扰乱初始状态是量子混沌系统的特征。鉴于在量子电池充电协议中从低能态快速填充高能级的重要性,这封信研究了量子扰动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,这是在量子电池背景下对量子扰动的首次深入探讨。通过分析时序外相关器的动态,我们的研究结果表明,尽管量子扰乱具有加速充电过程的潜力,但它并不一定会导致充电速度加快。
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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