Study of frequency-modulated excitation of Rydberg potassium atoms by using B-spline

doi:10.1088/1674-1056/21/9/094205

Abstract 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.

Keywords: B-spline frequency-modulated field two-level approach model potential

Received: 24 April 2011
Revised: 20 February 2012
Accepted manuscript online:

PACS:	42.50.Hz	(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
	42.50.Md	(Optical transient phenomena: quantum beats, photon echo, free-induction decay, dephasings and revivals, optical nutation, and self-induced transparency)
	32.30.Bv	(Radio-frequency, microwave, and infrared spectra)

Fund: Project supported by the Special Funds for the Projects of Basic Scientific Research and Operating Expenses of the Central Universities, Northwest University for Nationalities, China (Grant No. zyz2012103) and the National Natural Science Foundation of China (Grant Nos. 11044007 and 11064013).

Corresponding Authors: Li Xiao-Yong
E-mail: lxycock@163.com

Cite this article:

Li Xiao-Yong (李小勇), Wang Guo-Li (王国利), Zhou Xiao-Xin (周效信) Study of frequency-modulated excitation of Rydberg potassium atoms by using B-spline 2012 Chin. Phys. B 21 094205

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Study of frequency-modulated excitation of Rydberg potassium atoms by using B-spline

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