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.
出处
《天津科技大学学报》
CAS
2007年第1期63-66,共4页
Journal of Tianjin University of Science & Technology
关键词
共振拉曼作用
量子纠缠
量子约化熵
量子相对熵
resonance Raman process
quantum entanglement
quantum reduced entropy
quantum relative entropy
