中国物理B ›› 2012, Vol. 21 ›› Issue (9): 94205-094205.doi: 10.1088/1674-1056/21/9/094205
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
李小勇a b, 王国利b, 周效信b
Li Xiao-Yong (李小勇)a b, Wang Guo-Li (王国利)b, Zhou Xiao-Xin (周效信)b
摘要: With the B-spline expansion technique and a model potential of the alkali atoms, the properties of frequency-modulated excitation of Rydberg potassium atoms in a static electric field and a microwave field are investigated by using the time-dependent two-level approach. We successfully reproduce the square wave oscillations in the low frequency, the stair step population oscillations in the intermediate frequency, and the multiphoton transitions in the high frequency with respect to the unmodulated Rabi frequency, which have been observed experimentally by Noel et al. [Phys. Rev. A 58 2265 (1998)]. Furthermore, we also numerically obtain the discretized Rabi oscillations predicted in the Landau-Zener accumulation model.
中图分类号: (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)