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Chin. Phys. B, 2010, Vol. 19(8): 084204    DOI: 10.1088/1674-1056/19/8/084204
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

Quantum coherence in Λ-three-level system driven by bichromatic coupling field

Yang Li-Jun(杨丽君), Zhao Min(赵敏), Zhang Lian-Shui(张连水), Feng Xiao-Min(冯晓敏), Li Xiao-Li(李晓莉), and Wei Chang-Jiang(尉长江)
College of Physical Science and Technology, Hebei University, Baoding 071002, China
Abstract  We present a theoretical study of quantum coherent effects in a Λ-three-level system with a strong bichromatic coupling field and a weak probe field. When one component of the strong bichromatic coupling field is resonant with a corresponding transition and the other is detuning with an integer fraction of the Rabi frequency of the resonant field, the absorption spectrum exhibits a series of symmetrical doublets. While two frequencies of the strong bichromatic coupling field are symmetrically detuned from the transition, the position and the relative intensity of the absorption peak are both affected by the coupling field intensity and detuning. An explanation of the spectrum is given in term of the dressed-state formalism.
Keywords:  three-level system      bichromatic coupling field      dressed state      quantum coherence  
Received:  24 July 2009      Revised:  16 December 2009      Accepted manuscript online: 
PACS:  42.50.Ar  
  42.50.Md (Optical transient phenomena: quantum beats, photon echo, free-induction decay, dephasings and revivals, optical nutation, and self-induced transparency)  
Fund: Project supported by the Natural Science Foundation of Hebei Province, China (Grant No. A2009000140).

Cite this article: 

Yang Li-Jun(杨丽君), Zhao Min(赵敏), Zhang Lian-Shui(张连水), Feng Xiao-Min(冯晓敏), Li Xiao-Li(李晓莉), and Wei Chang-Jiang(尉长江) Quantum coherence in Λ-three-level system driven by bichromatic coupling field 2010 Chin. Phys. B 19 084204

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