Laser pulse design for coherent control of Rydberg lithium atoms  

作　　者：张现周 伍素玲 蒋利娟 马欢强 贾光瑞 

机构地区：[1]College of Physics and Information Engineering,Henan Normal University

出　　处：《Chinese Physics B》2010年第8期287-292,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.10774039);the Basic Research Program of Education Bureau of Henan Province of China(Grant No.072300410130)

摘　　要：Using time-dependent multilevel approach （TDML）, this paper studies the dynamics of coherent control of Rydberg lithium atoms and demonstrates that Rydberg lithium atoms can be transferred to states of higher principal quantum number by exposing them to specially designed frequency-chirped laser pulses. The population transfer from n=70 to n=75 states of lithium atoms with efficiency more than 90% is achieved by means of the sequential adiabatic rapid passages. The results agree well with the experimental ones and show that the coherent control of the population transfer from the lower n to the higher n states can be accomplished by the optimization of the chirping parameters and the intensity of laser field.Using time-dependent multilevel approach （TDML）, this paper studies the dynamics of coherent control of Rydberg lithium atoms and demonstrates that Rydberg lithium atoms can be transferred to states of higher principal quantum number by exposing them to specially designed frequency-chirped laser pulses. The population transfer from n=70 to n=75 states of lithium atoms with efficiency more than 90% is achieved by means of the sequential adiabatic rapid passages. The results agree well with the experimental ones and show that the coherent control of the population transfer from the lower n to the higher n states can be accomplished by the optimization of the chirping parameters and the intensity of laser field.

关 键 词：coherent control population transfer time-dependent multilevel approach （TDML） super-Gaussian laser pulse 

分 类 号：O562[理学—原子与分子物理] O431.2[理学—物理]