Analytical solutions for a doubly driven two-level atom  

作　　者：刘晋允 贾凤东 李晓康 吕双飞 许祥源 薛平 钟志萍 

机构地区：[1]School of Physical Sciences University of Chinese Academy of Sciences [2]State Key Laboratory of Low-dimensional Quantum Physics Department of PhysicsTsinghua University and Collaborative Innovation Center of Quantum Matter [3]Department of Physics Capital Normal University

出　　处：《Chinese Physics B》2017年第7期96-100,共5页中国物理B（英文版）

基　　金：Project supported by Beijing Natural Science Foundation,China(Grant No.1164016);the National Natural Science Foundation of China(Grant Nos.11604334,61227807,and 61575108);the Tsinghua Initiative Scientific Research Program,China(Grant No.2013THZ02-3)

摘　　要：We have deduced analytical solutions of an energy level diagram of the doubly driven/dressed atom for a two-level atom exposed to a strong near-resonant bichromatic laser field in a special case, i.e., the bichromatic field with frequencies ω1 and ω2, and Rabi frequencies ？1 and ？2, in which the first coupling field of ？1 acts on the bare atomic levels, and then the resulting singly dressed states are driven by the second coupling field of ？2, thus resulting in the doubly dressed atom.We have measured the probe absorption spectra of a doubly driven two-level atom. The system consists of 52S1/2, F= 2 and 5~2P_（3/2）, F＇= 3 states of ^（87）Rb atoms in a magneto-optical trap（MOT） as well as the cooling/trapping beams and an additional coupling field. As for the spectroscopic properties of the doubly driven two-level atom, theoretical analytical solutions are in general agreement with the experimental spectrum as a whole.We have deduced analytical solutions of an energy level diagram of the doubly driven/dressed atom for a two-level atom exposed to a strong near-resonant bichromatic laser field in a special case, i.e., the bichromatic field with frequencies ω1 and ω2, and Rabi frequencies ？1 and ？2, in which the first coupling field of ？1 acts on the bare atomic levels, and then the resulting singly dressed states are driven by the second coupling field of ？2, thus resulting in the doubly dressed atom.We have measured the probe absorption spectra of a doubly driven two-level atom. The system consists of 52S1/2, F= 2 and 5~2P_（3/2）, F＇= 3 states of ^（87）Rb atoms in a magneto-optical trap（MOT） as well as the cooling/trapping beams and an additional coupling field. As for the spectroscopic properties of the doubly driven two-level atom, theoretical analytical solutions are in general agreement with the experimental spectrum as a whole.

关 键 词：the doubly driven/dressed atom near-resonant bichromatic laser field energy level 

分 类 号：O562[理学—原子与分子物理]