论文类型：期刊论文
第一作者：Pei, Pei
通讯作者：Pei, P (reprint author), Dalian Univ Technol, Sch Phys & Optoelect Engn, Dalian 116024, Peoples R China.
合写作者：Li, Chong,Song, He-Shan
发表时间：2010-09-01
发表刊物：INTERNATIONAL JOURNAL OF QUANTUM INFORMATION
收录刊物：SCIE
卷号：8
期号：6
页面范围：937-945
ISSN号：0219-7499
关键字：Quantum entanglement; quantum computation; molecular vibrational and rotational levels
摘要：We studied the dynamics of entanglement in ultra-cold heteronuclear diatomic rovibrational molecules driven by an infrared laser field. Environment-induced spontaneous emission is considered. Numerical results show that the resonant external field and damping processes can bring into equilibrium and the disentanglement can be suppressed evidently. Appropriate intensity of far detuned pulses can also suppress disentanglement and produce some entanglement if there is initially separable state, but damping processes and interaction via polarizability dominate the disentanglement, leading to the vanishing of entanglement after a long time.
