腔光机械系统的纠缠演化特征  

Evolution characteristic of entanglement in cavity optomechanical system

作　　者：闫学群[1] 岳建林[1] YAN Xue-qun,YUE Jian-lin(School of Science,Tianjin Polytechnic University, Tianjin 300387, Chin)

机构地区：[1]天津工业大学理学院,天津300387

出　　处：《天津工业大学学报》2018年第3期72-75,共4页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(61271011)

摘　　要：为深入了解微型腔光机械系统的量子效应,对双腔光机械系统的光场模纠缠演化特性进行研究,重点分析了初始态参数对系统量子纠缠的影响.结果表明:随着初始态参数α的增大,系统将达到最大纠缠态,即系统的纠缠度为1;另外,系统纠缠度越大,纠缠度随时间演化的衰减速率就越大;然而,系统纠缠度越大,纠缠存活的时间就越长,这个特性对于应用是有益处的.In order to further understand the quantum effects of micro-optomechanical systems, the evolution characteristic of the field mode entanglement of two-optomechanical system is investigated. The influence of initial state parameters on quantum entanglement is analyzed. The results show that the entanglement of the system reach its maximum with the increase of the initial state parameter α. In addition, the larger the entanglement of the system is, the larger the entanglement decay rate is, as time increases. However, the survival time of the entanglement is longer when the entanglement of the system is increasing. It is beneficial to practical applications.

关 键 词：腔光机械系统 光场模纠缠 纠缠演化 衰减速率 量子效应 

分 类 号：O413.1[理学—理论物理]