摘要
采用含时多态展开方法(TDML),对超高斯频率啁啾的激光场中的里德堡钾原子布居数相干迁移进行了计算研究,结果表明:在合适的激光参数下,采用超高斯啁啾脉冲可以实现布居数在量子态间的有效跃迁.通过对该体系动态Rabi频率的分析,得出:实现布居数囚禁的关键不在于具体Rabi频率的大小,而在于实现Rabi频率的适时跳转.
The characteristic of population transfer of potassium atom by frequency-chirped super-gauss laser pulses is studied by using time-dependent multilevel approach （TDML）. With the calculation of the population transfer of Rydberg potassium atoms with different super gauss index and half pulse width, the population is excited to the target states eventually. By studying the system＇s dynamic Rabi frequency, it has been found out that trapped population doesn＇t consist in the magnitude of the Rabi frequency, but in the change of the sign of Rabi frequency in appropriate time.
出处
《河南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第6期44-47,共4页
Journal of Henan Normal University(Natural Science Edition)
基金
国家自然科学基金资助(10774039)
关键词
频率啁啾
超高斯
TDML方法
动态Rabi频率
frequency chirped
super gauss laser
time-dependent multilevel approach （TDML）
dynamic Rabi frequency
