双模光场与原子共振拉曼相互作用中的纠缠特性  

The Quantum Entanglement Property of the Atom Interacting with the Optical Field Through Resonance Raman Process

作　　者：李燕丽[1] 

机构地区：[1]天津科技大学理学院,天津300457

出　　处：《天津科技大学学报》2007年第1期63-66,共4页Journal of Tianjin University of Science & Technology

摘　　要：在二能级原子静止和运动的情况下,研究了原子与双模压缩真空态量子化腔场共振拉曼过程中的纠缠特性,利用量子化熵和量子相对熵分别讨论了原子与双模光场之间以及双模光场两模之间的纠缠性质．研究发现:通过适当改变场模参量和原子初态可以控制纠缠的时间和纠缠强度演化．For the case that a two-level atom is moving or still,entanglement is studied in the interaction system of two-mode squeezing vacuum state interacting with the two-level atom by two-photon resonance Raman process. The entanglement properties between the two-mode field and the atom and that between the two modes of the field are respectively investigated by using the quantum reduced entropy and the quantum relative entropy. It is discovered that entanglement time and degree can be controlled through changing the parameter of the two mode field and the initial condition of the atom.

关 键 词：共振拉曼作用 量子纠缠 量子约化熵 量子相对熵 

分 类 号：O431.2[机械工程—光学工程]