Scrambling in the Charging of Quantum Batteries

• URL: http://arxiv.org/abs/2409.10590v1
• Date: Mon, 16 Sep 2024 16:11:55 GMT
• Title: Scrambling in the Charging of Quantum Batteries
• Authors: Sebastián V. Romero, Yongcheng Ding, Xi Chen, Yue Ban,
• Abstract summary: This Letter investigates the role of quantum scrambling in quantum batteries and its effect on optimal power and charging times. 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.
• Score: 3.5621685463862356
• License: http://creativecommons.org/licenses/by/4.0/
• 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 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.

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