Creation of Coherent Superposition States in Multilevel Systems

O4; A powerful approach to generate multilevel superposition state in ∧-type manifold of levels is proposed. In the analysis, we introduce a group of rotations to transform the coupled system to a simpler form, which involves one coupled and several decoupled, dark states in the ground state manifol...

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Bibliographic Details
Published in理论物理通讯（英文版） Vol. 48; no. 11; pp. 908 - 912
Main Authors QIN Jia-Qian, KUANG Ye, SHU Xiao-Qin
Format Journal Article
LanguageEnglish
Published Department of Physics, Sichuan University, Chengdu 610064, China 2007
Subjects
coherent superposition state
degenerate dark state
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Summary:O4; A powerful approach to generate multilevel superposition state in ∧-type manifold of levels is proposed. In the analysis, we introduce a group of rotations to transform the coupled system to a simpler form, which involves one coupled and several decoupled, dark states in the ground state manifold. Then an arbitrary superposition state of initial and final states can be created. In particular, when the Rabi frequencies of the Stokes pulses have equal magnitudes, a superposition state (equal population of the (n - 2) superposition states) will be generated. A numerical simulation of coherence generation is given. It is shown that a small transient population in metastable state decreases as the intensity of Stokes pulses increases. Experimental implementation in Neon atom is given.
ISSN:0253-6102