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交叉电磁场中氢原子外势阱态的有效布居
Population of hydrogen to the adiabatic outer well states in crossed fields
摘要点击 35  全文点击 5  投稿时间:2017-08-16  修订日期:2017-10-16
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DOI编号  
中文关键词   里德堡原子  双势阱  数值模拟
英文关键词   Rydberg atoms  double-wells  numerical calculations
基金项目   国家自然科学基金(11504157);河南省高等学校重点科研项目编号(16A140015,16A140013)
作者单位E-mail
杨海峰 洛阳师范学院物理与电子信息学院 yanghf263@163.com 
胡要花 洛阳师范学院物理与电子信息学院 huyaohua1@sina.com 
谭勇刚 洛阳师范学院物理与电子信息学院 yonggang.tan@gmail.com 
中文摘要
    在交叉的电场和磁场中,氢原子势能面具有双井结构. 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.
英文摘要
    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.

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