双模交叉克尔型耦合系统中宏观量子叠加态的制备  

Preparation of macroscopic quantum superposition state in a two-mode crossed Kerr-type coupling system

作　　者：韩佳秀 龙玉梅[1] 郑丽 张雪[1] 孙迎春[1] 郑泰玉[1] HAN Jia-xiu;LONG Yu-mei;ZHENG Li;ZHANG Xue;SUN Ying-chun;ZHENG Tai-yu(School of Physics,Northeast Normal University,Changchun 130024,China;Department of Basic Courses Teaching,Dalian Polytechnic University,Dalian 116034,China)

机构地区：[1]东北师范大学物理学院,吉林长春130024 [2]大连工业大学基础教学部,辽宁大连116034

出　　处：《东北师大学报（自然科学版）》2022年第1期84-88,共5页Journal of Northeast Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(11175044).

摘　　要：利用双模交叉克尔型耦合光力系统中的光机耦合来制备宏观量子叠加态.考虑二能级原子与单模光腔的强耦合相互作用,并引入单模光腔与单模机械振子间双模交叉克尔型耦合.通过分析发现交叉克尔效应可以放大机械振子的位移,并且当耦合系数趋近于机械振子的振动频率时,可以制备出机械振子的可区分宏观量子叠加态.The macroscopic quantum superposition states are prepared by the optical-mechanical coupling in a dual-mode crossed Kerr-type coupled optical system, with the strong coupling interaction between the two-level atom and the single-mode optical cavity to be considered. The single-mode optical cavity is coupled to the single-mode mechanical oscillator by a dual-mode cross-Kerr coupling. It is shown that the cross-Kerr effect can amplify the mechanical oscillator displacement. And when the coupling coefficient approaches the vibration frequency of the mechanical oscillator, a distinguishable macroscopic quantum superposition state of the mechanical oscillator can be prepared.

关 键 词：交叉克尔型耦合光力系统 强耦合 宏观量子叠加态制备 

分 类 号：O413.1[理学—理论物理] O431.2[理学—物理]