中国物理B ›› 2007, Vol. 16 ›› Issue (12): 3697-3703.doi: 10.1088/1009-1963/16/12/024
高云峰1, 刘堂昆2, 程维文2, 单传家2, 王继锁3
Liu Tang-Kun(刘堂昆)a)†, Cheng Wei-Wen(程维文)a), Shan Chuan-Jia(单传家) a), Gao Yun-Feng(高云峰)b), and Wang Ji-Suo(王继锁)c)
摘要: Based on the quantum information theory, this paper has investigated the entanglement properties of a system which is composed of the two entangled two-level atoms interacting with the two-mode entangled coherent fields. The influences of the strength of light field and the two parameters of entanglement between the two-mode fields on the field entropy and on the negative eigenvalues of partial transposition of density matrix are discussed by using numerical calculations. The result shows that the entanglement properties in a system of a pairwise entangled states can be controlled by appropriately choosing the two parameters of entanglement between the two-mode entangled coherent fields and the strength of two light fields respectively.
中图分类号: (Entanglement and quantum nonlocality)