Majorana表象下的纠缠动力学  

Entanglement dynamics in Majorana representation

作　　者：曹辉[1] 

机构地区：[1]北京理工大学物理学院,北京100081

出　　处：《物理学报》2013年第3期31-36,共6页Acta Physica Sinica

基　　金：国家重点基础研究发展计划(批准号:2011CB921503);国家自然科学基金(批准号:11075020;91021021)资助~~

摘　　要：借助在Majorana表象下提出的纠缠度定义,研究了对称双阱中两个玻色原子组成的系统的纠缠动力学.得到了系统的任意态在Majorana表象下的表示,并考察了原子间相互作用及系统初始状态对纠缠度动力学的影响.发现原子间相互作用会决定纠缠度振荡的频率,而纠缠度振荡的幅度对系统的初态很敏感.With the help of the newly proposed definition of entanglement, the entanglement dynamics of a system composed of two bosonic atoms trapped in a symmetric double-well potential is investigated. For any state of this system, the description of Majorana represen-tation can be analytically derived. It is found that the entanglement dynamics depends on both the atomic interaction and the initial state of the system. Specifically, the atomic interaction determines the oscillation frequency of the entanglement degree, whereas the initial state controls the oscillation amplitude.

关 键 词：Majorana表象 量子纠缠 

分 类 号：O431.2[机械工程—光学工程]