论文标题
反向量子速度限制：量子电池可以放电的速度如何？
Reverse Quantum Speed Limit: How Slow Quantum Battery can Discharge?
论文作者
论文摘要
我们介绍了任意量子进化的反向量子速度限制的概念，它回答了一个基本问题：``量子系统能够在时间上演变的慢速度？带有外部驾驶哈密顿的两级量子系统表明我们的结果很好，我们还发现了我们的界限很紧。我们的结果为量子电池的平均放电能力提供了下限。
We introduce the notion of reverse quantum speed limit for arbitrary quantum evolution which answers a fundamental question: ``how slow a quantum system can evolve in time?" Using the geometrical approach to quantum mechanics, the reverse speed limit follows from the fact that the gauge invariant length of the reference section is always greater than the Fubini-Study distance on the projective Hilbert space of the quantum system. We illustrate the reverse speed limit for two-level quantum systems with an external driving Hamiltonian and show that our results hold well. We find several examples where our bound is tight. We also find one practical application of the reverse speed limit in discharging process of quantum batteries which answers the question: ``how slow quantum batteries can discharge?" Our result provides a lower bound on the average discharging power of quantum batteries.
