光学学报, 2017, 37 (7): 0727001, 网络出版: 2017-07-10
双腔光纤耦合系统中的纠缠特性
Entanglement Characteristics in Fiber-Coupled Two-Cavity Systems
量子光学 光纤耦合腔系统 负本征值 原子系综 量子纠缠 quantum optics fiber-coupled cavity system negative eigenvalue atomic ensemble quantum entanglement
摘要
采用负本征值描述两个子系统间的纠缠,研究了光纤耦合腔模型中每个腔囚禁原子系综的情况下,两腔场间和腔场与原子系综间的纠缠特性。讨论了原子系综所含的原子数以及光纤模与腔模间耦合系数对纠缠特性的影响。研究结果表明,随着原子数的增大,两腔场间纠缠以及腔场与原子系综间纠缠的拉比振荡频率都增大;随着光纤模与腔模间耦合系数的增大,两腔场间纠缠和腔场与原子系综间的纠缠都增强。
Abstract
By employing the negative eigenvalue to describe the entanglement between two systems, the entanglement characteristics between the two cavities and between the cavity and the atomic ensemble in the fiber-coupled cavity model are studied under the condition that both cavities trap atomic ensembles. The effects of the number of atoms contained in the atomic ensemble and the fiber-cavity coupling coefficient on the entanglement characteristics are discussed. The results show that the Rabi oscillation frequency of the entanglement between the two cavities as well as that between the cavity and the atomic ensemble increases with the increase of the number of atoms. As the fiber-cavity coupling coefficient increases, the entanglement between the two cavities as well as that between the cavity and the atomic ensemble is strengthened.
卢道明. 双腔光纤耦合系统中的纠缠特性[J]. 光学学报, 2017, 37(7): 0727001. Lu Daoming. Entanglement Characteristics in Fiber-Coupled Two-Cavity Systems[J]. Acta Optica Sinica, 2017, 37(7): 0727001.