利用依赖强度的非共振相互作用实现纠缠信息的完全交换(英文)  

Complete Swapping of Quantum Entanglement Information through Nonresonant Interaction by Intensity-dependent Coupling

作　　者：王菊霞[1] 杨志勇[1] 安毓英[1] 

机构地区：[1]西安电子科技大学技术物理学院

出　　处：《量子光学学报》2008年第3期293-297,共5页Journal of Quantum Optics

基　　金：the foundations of the Natural Science of Shaanxi,China(2001Sl04;2004A19);Specialized Scientific research of Education Department of Shaanxi,China(08JK286);Key Scientific research of Weinan Teachers University,China(08YKF014)~~

摘　　要：利用全量子理论,分析了多个原子-腔场构成的联合系统中原子与腔场依赖强度的非共振相互作用过程。结果表明:通过控制原子与腔场相互作用时间,并对原子状态进行测量,原子最大纠缠态与类奇偶相干态光场的最大纠缠态可以相互转换;对失谐量的限制,使得二者之间完全交换,进一步证明封闭系统中的演化是可逆的。From the viewpoint of complete quantum theory, the process of the nonresonant interaction of atoms with cavity fields by intensity-dependent coupling was analyzed in the joint system consisting of multi-atom and multi-cavity. It is found that the quantum entanglement information can be completely interchanged between the atomic maximal entangled state and the maximal odd-even-like coherent entangled state by controlling the time of atoms interacting with cavity fields and measuring the atom states just being out of cavity. The quantum information can be completely swap by properly limiting the detuning value. The procedures mentioned above show that the process of evolution is reversible within the close system.

关 键 词：量子光学 纠缠信息 依赖强度耦合 非共振相互作用 完全交换 

分 类 号：O431[机械工程—光学工程]