ADIABATICITY OF THE DARK STATE IN A NONLINEAR ATOM-TRIMER CONVERSION SYSTEM

Shao-Ying Meng (), Li-Bin Fu and Jie Liu
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Shao-Ying Meng: Institute of Applied Physics and Computational Mathematics, P. O. Box 8009, Beijing 100088, P. R. China
Li-Bin Fu: Institute of Applied Physics and Computational Mathematics, P. O. Box 8009, Beijing 100088, P. R. China
Jie Liu: Institute of Applied Physics and Computational Mathematics, P. O. Box 8009, Beijing 100088, P. R. China

International Journal of Modern Physics C (IJMPC), 2009, vol. 20, issue 07, 1011-1022

Abstract: We investigate the adiabaticity of the dark state in a nonlinear atom-trimer conversion system in a stimulated Raman adiabatic passage (STIRAP). We find that, in the absence of the nonlinear collisions, the adiabatic condition for this nonlinear system only depends on the Rabi-frequency of the dimer-trimer coupling optical field, which is different from traditional STIRAP processes. In the presence of the nonlinear collisions, the adiabatic condition also relies on the atom-dimer coupling Rabi frequency. However, its influence is really small. Moreover, we propose a more feasible two-photon STIRAP scheme that has better adiabaticity and hence could yield higher atom-trimer conversion efficiency.

Keywords: Atom-trimer conversion system; stimulated Raman adiabatic passage; dark state; adiabaticity; 37.10.De; 37.10.Mn; 37.10.Vz (search for similar items in EconPapers)
Date: 2009
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DOI: 10.1142/S0129183109014151

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