交叉电磁场中氢原子外势阱态的有效布居

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.

Population of hydrogen to the adiabatic outer well states in crossed fields

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.