摘要
本文运用Ting Yuand J.H.Eberly〔1〕介绍的Λ函数理论和负纠缠理论研究了两个纠缠原子与真空场相互作用时原子纠缠随时间的演化,发现了原子纠缠会出现突然死亡和复苏的现象;讨论了负纠缠理论和Λ函数理论除有良好的对应之外,Λ小于0表示可分离混合态的意义是负纠缠理论和C函数理论所不能赋予的;初态对纠缠死亡等纠缠特性有很大影响。
In this paper, the atomic entanglement evolution in the system of two atoms interacting with vacuum is investigated making use of ∧ ftmction and negative entanglement theory. The result shows that the sudden death and revival of the atomic entanglement, the good correspondence between ∧ function and negative entanglement, the state being both mixed and separable expressed by ∧ 〈 0 which can not be expressed by negative entanglement theory and C funciton, and the initial state＇s effect on entanglement property.
出处
《激光杂志》
CAS
CSCD
北大核心
2008年第2期13-14,共2页
Laser Journal
关键词
量子光学
量子信息
纠缠突然死亡
quantum optics
quantum information
entanglement sudden death.
