驻波场中囚禁离子振动压缩  

Vibrational squeezing of a trapped ion in a standing-wave field

作　　者：周青春 刘梦涛 张诗颖 刘翔宇 ZHOU Qingchun;LIU Mengtao;ZHANG Shiying;LIU Xiangyu(School of Science,Jiangsu University of Science and Technology, Zhenjiang 212003, China)

机构地区：[1]江苏科技大学理学院,镇江212003

出　　处：《江苏科技大学学报（自然科学版）》2020年第2期115-118,共4页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：国家自然科学基金资助项目(11547024)。

摘　　要：研究了驻波激光场与囚禁在谐振势中离子p量子共振相互作用系统中离子振动正交相压缩特性,通过数值计算揭示了参量p和Lamb-Dicke参量η以及离子在驻波场中位置对压缩特性的影响.结果表明,大的Lamb-Dicke参量不利于压缩,而多量子共振有助于压缩,离子中心从驻波激光场的波腹向波节移动时,压缩区宽度和出现时间变化对奇数和偶数p是相反的.The quadrature squeezing properties of an ion,trapped in the harmonic potential,interacting with a standing-wave laser field are studied under the condition of p-quantum resonance.The effects of the parameter p,the Lamb-Dicke constantηand the position of the ion in the standing-wave field on the vibrational squeezing are revealed by numerical calculation and theoretical analysis.The results show that a large Lamb-Dicke parameters is not conducive to squeezing,while the multi-quantum resonance contributes to the squeezing effect.When the ion center moves from the antinode to the node of the standing-wave laser field,the variations of the width and the occurring time of the squeezing zone are opposite for odd and even p’s.

关 键 词：驻波激光场 囚禁离子 Lamb-Dicke参量 压缩 

分 类 号：O431.2[机械工程—光学工程]