Adiabatic evolution for the Rb-87 atom-molecule conversion system

作者：Meng Shao Ying^*; Fu Li Bin; Liu Jie

来源：Journal of Physics B: Atomic, Molecular and Optical Physics , 2009, 42(18): 185301.

DOI：10.1088/0953-4075/42/18/185301

• Adiabatic evolution
• Adiabaticity
• Atomic Bose-Einstein condensate
• Condensate systems
• Conversion systems
• Dark state
• Inter-particle interaction
• Molecular state
• Stimulated Raman adiabatic passage

The adiabaticity of the stimulated Raman adiabatic passage (STIRAP) for the Rb-87 atom-molecule conversion in a condensate system is investigated in terms of a newly defined adiabatic fidelity. The evolution of the dark state in the STIRAP is simulated numerically by considering the interparticle interactions and spontaneous emissions of the excited molecular state. We find that these terms will reduce the adiabatic fidelity; however, one can still achieve higher adiabatic fidelity through optimizing the external parameters of the STIRAP. Our discussions are helpful in obtaining higher conversion efficiency from an atomic Bose-Einstein condensate to its molecular counterpart in experiment.

• 出版日期2009-9-28
• 单位北京应用物理与计算数学研究所; 中国工程物理研究院; 辽宁大学; 北京大学