学术
Entanglement properties in a system of a pairwise entangled state
刘堂昆[1] 程维文[1] 单传家[1] 高云峰[2] 王继锁[3]
[1]Department of Physics, Hubei Normal University, Huangshi 435002, China Hubei Province Key Laboratory of Bioanalytical Technique （ Hubei Normal University） [2]College of Educational Technology and Massmedia, Liaocheng University, Liaocheng 252059, China [3]Institute of Optical Communication, Liaocheng University, Liaocheng 252059, China
文章出处:
《中国物理：英文版》-2007年16卷12期 -3697-3703页
分 类 号:
文章编号:
1009-1963/2007/16（12）/3697-07
Entanglement properties in a system of a pairwise entangled state
Liu Tang-Kun , Cheng Wei-Wen ,Shan Chuan-Jia , Gao Yun-Feng,Wang Ji-Suo（1 Department of Physics, Hubei Normal University, Huangshi 435002, China Hubei Province Key Laboratory of Bioanalytical Technique （ Hubei Normal University） ;2 College of Educational Technology and Massmedia, Liaocheng University, Liaocheng 252059, China ;3 Institute of Optical Communication, Liaocheng University, Liaocheng 252059, China）
Abstract:
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.[著者文摘]
Key words:
field entropy, negative eigenvalues, two entangled atoms, two-mode entangled coherent fields
基金资助:
Project supported by the Higher Education of Hubei Province of China （Grant No Z200522001） and the Natural Science Foundation of Hubei Province of China （Grant No 2006ABA055）.
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