凸起结构附近原子的共振卡西米尔 波德力特性  

Resonant Casimir-Polder Force Properties of Atoms in the Vicinity of a Convex Structure

作　　者：高广波 单馨雨 赵金云 黄勇刚[1] GAO Guangbo;SHAN Xinyu;ZHAO Jinyun;HUANG Yonggang(College of Physics and Electromechanical Engineering,Jishou University,Jishou 416000,Hunan China)

机构地区：[1]吉首大学物理与机电工程学院,湖南吉首416000

出　　处：《吉首大学学报（自然科学版）》2023年第6期59-66,共8页Journal of Jishou University(Natural Sciences Edition)

基　　金：吉首大学2021年研究生科研项目(JDY21033)。

摘　　要：利用COMSOL Multiphysics软件,研究凸起结构附近二能级原子的跃迁频率及所处位置对共振卡西米尔波德力的影响.结果表明,相较于截面银纳米球结构,凸起结构会产生新的表面等离激元共振模式,该模式对原子所受的共振卡西米尔波德力产生极大的增强作用.当原子离凸起结构表面较近时,新局域共振模式对原子所受的共振卡西米尔波德力的调控起主导作用;随着距离的逐渐增大,新局域共振模式对原子所受的共振卡西米尔波德力的贡献急剧减小,且凸起结构的共振模式比截面银纳米球结构的共振模式对原子所受的共振卡西米尔波德力的贡献减小得更快.The influence of the transition frequency and position of a two-level atom in the vicinity the convex structure on the resonant casimir-polder force is studied by using COMSOL Multiphysics software.The results show that compared with the cross-sectional silver nanospheres,the convex structure produces a new surface plasmon resonance mode,which greatly enhances the resonance casimir-polder force on the atom.In addition,when the atom is close to the surface of the convex structure,the new resonance mode plays a leading role in the regulation of the resonant casimir-polder force,and the contribution of the new resonant mode to the resonant casimir-polder force decreases sharply with the increase of the distance.and the contribution of the resonance mode produced by the bulge is faster than that produced by the cross-section silver nanospheres.

关 键 词：卡西米尔波德力 自发辐射增强 截面银球 凸起结构 

分 类 号：O431.2[机械工程—光学工程]