论文标题
Floquet Engineering重新激活耗散量子电池
Floquet Engineering to Reactivate a Dissipative Quantum Battery
论文作者
论文摘要
作为一个能源存储和转换设备在原子尺寸附近，量子电池（QB）承诺使用量子资源增强充电功率和可提取的工作。然而，普遍存在的脱碳导致其循环充电存储过程被停用，这称为QB的衰老。在这里，我们提出了一种克服QB衰老的机制。发现当在由QB-Charger设置及其各自的环境组成的总系统的准频谱中形成两个Floquet Bound状态（FBSS）时，QB的变质被抑制。只要两个FBS的准耐药是退化的，或者在两个FBS存在的情况下QB包含耦合量很大，暴露于耗散环境的QB返回其近乎理想的环状阶段。我们的结果提供了一个有见地的准则，可以使用Floquet工程实践QB。
As an energy storing and converting device near atomic size, a quantum battery (QB) promises enhanced charging power and extractable work using quantum resources. However, the ubiquitous decoherence causes its cyclic charging-storing-discharging process to become deactivated, which is called aging of the QB. Here, we propose a mechanism to overcome the aging of a QB. It is found that the decoherence of the QB is suppressed when two Floquet bound states (FBSs) are formed in the quasienergy spectrum of the total system consisting of the QB-charger setup and their respective environments. As long as either the quasienergies of the two FBSs are degenerate or the QB-charger coupling is large in the presence of two FBSs, the QB exposed to the dissipative environments returns to its near-ideal cyclic stage. Our result supplies an insightful guideline to realize the QB in practice using Floquet engineering.
