摘要
在无旋波近似下,研究了一个二能级系统与零温结构库的相互作用.当系统与环境为弱耦合时,推导出描述系统状态演化的主方程.解析与数值结果均表明,反旋转波项对系统的非马可夫动力学起着重要作用.同时也分析了最近提出的两种非马可夫度量之间的差别.
The non-Markovianity for a two-level system interacting is studied with a zero-temperature structured environment without rotating wave approximation. In the limit of weak coupling between the system and the reservoir, the time-local non-Markovian master equation for the reduced state of the system is derived. Both the analytic and numerical results show that the counter-rotating wave terms play an important role for the non-Markovian dynamics of the system. And the difference of the two non-Markovian measures is proposed recently.
出处
《湖南文理学院学报（自然科学版）》
CAS
2012年第2期12-20,共9页
Journal of Hunan University of Arts and Science(Science and Technology)
基金
Project supported by the National Natural Science Foundation of China(Grant No.11075050)
the National Fundamental Research Program of China(Grant No.2007CB925204)
the Construct Program of the National Key Discipline
关键词
开放量子系统
旋波近似
非马尔科夫性
open quantum system
rotating wave approximation
non-Markovianity
