Dynamical instability and adiabatic evolution of the atom--homonuclear--trimer dark state in a condensate system
Meng Shao-Ying(孟少英)a)b), Wu Wei(吴炜)b), Liu Bin(刘彬)a), Ye Di-Fa(叶地发)a), and Fu Li-Bin(傅立斌)c)†
a Graduate School, China Academy of Engineering Physics, Beijing 100088, China; b Department of Physics, Municipal Key Laboratory of Photoelectronic Devices and Detection Technology, Liaoning University, Shenyang 110036, China; c Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
Abstract This paper investigates the dynamical instability and adiabatic evolution of the atom--homonuclear--trimer dark state of a condensate system in a stimulated Raman adiabatic passage aided by Feshbach resonance. It obtains analytically the regions for the appearance of dynamical instability caused by the interparticle interactions. Moreover, the adiabatic property of the dark state is also studied in terms of a newly defined adiabatic fidelity. It shows that the nonlinear collisions have a negative effect on the adiabaticity of the dark state and hence reduce the conversion efficiency.
Received: 08 January 2009
Revised: 13 January 2009
Accepted manuscript online:
Fund: Project
supported by the National Natural Science Foundation of China (Grant
Nos 10674174, 10604009 and 10725521), the National Fundamental
Research Programme of China (Grant No 2006CB921400 and 2007CB814800)
and Natural Science Foundation of Liaoning Province of China (Grant
No 20072054).
Cite this article:
Meng Shao-Ying(孟少英), Wu Wei(吴炜), Liu Bin(刘彬), Ye Di-Fa(叶地发), and Fu Li-Bin(傅立斌) Dynamical instability and adiabatic evolution of the atom--homonuclear--trimer dark state in a condensate system 2009 Chin. Phys. B 18 3844
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