压缩热场光腔-原子量子电池的功提取动力学演化  

Dynamics of work extraction of a cavity-atom quantum battery in a squeezed thermal reservoir

作　　者：徐俊 郝翔 XU Jun;HAO Xiang(School of Physical Science and Technology,SUST,Suzhou 215009,China)

机构地区：[1]苏州科技大学物理科学与技术学院,江苏苏州215009

出　　处：《苏州科技大学学报（自然科学版）》2024年第2期36-42,共7页Journal of Suzhou University of Science and Technology（Natural Science Edition）

基　　金：江苏省“十四五”重点培育学科建设项目(2021135)。

摘　　要：构建了一种基于光腔与原子耦合的开放量子电池系统,通过调控压缩热场的量子特性实现了稳定赋能。利用量子态Bloch矢量的动力学映射方法,研究了压缩热场环境对量子电池功提取的动力学机制。研究发现,电池在低温条件下,量子功提取效果较好。量子环境的记忆效应和环境压缩特性在一定程度上有利于改善量子功提取。揭示了量子功提取与量子相干之间的物理关联,量子相干特性显著的电池具有较高的量子功提取。这为光腔辅助的开放量子电池提供了一种可行性方案。The open quantum battery system was constructed in an optical cavity coupled to atoms.The stabilization of quantum battery charging was realized by the manipulation of quantum effects from a squeezed thermal reservoir.The mapping method of Bloch vectors of quantum states was put forward to study the dynamics of quantum work extraction in the squeezed thermal environment.It is found that the work extraction can be enhanced at low temperatures.The memory and squeezing effects of the environment can help to improve the increase of quantum work extraction to a certain extent.The physical correlation between quantum coherence and quantum work extraction is analytically investigated.The quantum coherence contributes to quantum work extraction.These results are helpful for the feasible protocol of quantum open batteries in a cavity.

关 键 词：量子电池 压缩热场 量子功提取 量子退相干 

分 类 号：O441.4[理学—电磁学]