摘要
在交叉的电场和磁场中,氢原子势能面具有双阱结构.本文通过施加时变的电场,将库伦内阱量子态绝热转移到外阱的叠加态.使用量子力学方法对制备方案开展了数值模拟,研究了电场的非绝热效应对末态波函数几率分布、原子存活几率、波函数位置期望值及能级分布的影响.结果表明,较大的时间参数能够更加高效的将电子波包布居到外阱中能级较低且能量分布较窄的叠加态,且末态原子表现出巨大的电偶极矩.
In crossed magnetic and electric fields,double-wells structure can be constructed for the potential of hydrogen.In this paper,the initial inner well states are transferred into a superposition of the outer well states adiabatically by applying time-dependent electric fields.Numerical simulation with quantum dynamics method of this preparation scheme are carried out.The effects of nonadiabatic switching on of the electric field on the probability distributions,survival probability,position expectation values and energy levels distribution of the final states are examined.It shows that a large time parameter can guarantee high efficiency to populate the atom into the lower energy states of the outer well with narrow energy distribution,which present huge dipole moment.
作者
杨海峰
胡要花
谭勇刚
YANG Hai-Feng;HU Yao-Hua;TAN Yong-Gang(College of Physics and Electronic Information,Luoyang Normal University,Luoyang 471934,China)
出处
《原子与分子物理学报》
CAS
北大核心
2018年第5期739-744,共6页
Journal of Atomic and Molecular Physics
基金
河南省高等学校重点科研项目(16A140015)
关键词
里德堡原子
双势阱
数值模拟
Rydberg atoms
Double-wells
Numerical calculations
作者简介
杨海峰(1984-),男,河南灵宝人,副教授,研究方向为原子光谱及动力学.E-mail:yanghf263@163.com。
