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Linear instability and adiabaticity of a dark state during conversion of two species of fermionic atoms to stable molecules

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【Author】 Meng Shao-Ying a) , Chen Xi-Hao a) , Wu Wei a) , and Fu Li-Bin b)c) a) Department of Physics, Liaoning University, Shenyang 110036, China b) Science and Technology Computation Physics Laboratory, Institute of Applied Physics and Computational Mathematics, P. O. Box 8009, Beijing 100088, China c) Center for Applied Physics and Technology, Peking University, Beijing 100871, China

【机构】 Department of Physics, Liaoning University, Shenyang 110036, China； Science and Technology Computation Physics Laboratory, Institute of Applied Physics and Computational Mathematics, P. O. Box 8009, Beijing 100088, China； Center for Applied Physics and Technology, Peking University, Beijing 100871, China；

【摘要】 In the present paper, we investigate the linear instability and adiabaticity of a dark state during conversion of two species of fermionic atoms to stable molecules through the stimulated Raman adiabatic passage aided by Feshbach resonance. We analytically obtain the regions for the appearance of linear instability. Moreover, taking 40 K and 6 Li atom–molecule conversion systems as examples, we give the unstable regions numerically. We also attempt to obtain the adiabatic criterion for this nonlinear system with classical adiabatic dynamics and study the adibaticity of the dark state with the adiabatic condition.更多还原

【Abstract】 In the present paper, we investigate the linear instability and adiabaticity of a dark state during conversion of two species of fermionic atoms to stable molecules through the stimulated Raman adiabatic passage aided by Feshbach resonance. We analytically obtain the regions for the appearance of linear instability. Moreover, taking 40 K and 6 Li atom–molecule conversion systems as examples, we give the unstable regions numerically. We also attempt to obtain the adiabatic criterion for this nonlinear system with classical adiabatic dynamics and study the adibaticity of the dark state with the adiabatic condition.更多还原

【关键词】 linear instability； adiabaticity； dark state； atom-molecule conversion；
【Key words】 linear instability； adiabaticity； dark state； atom-molecule conversion；

【基金】 supported by the National Natural Science Foundation of China (Grants No. 11005055, 10725521, and 11075020);the National Fundamental Research of China (Grant No. 2011CB921503);the Ph. D. Program Foundation of the Science and Technology Bureau of Liaoning Province of China (Grant No. 20111034);the Higher School Excellent Researcher Award Program from the the Educational Department of Liaoning Province of China (Grant No. LJQ2011005);the Youth Fund Project of Liaoning University (Grant No. 2010LDQN17)

【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2012年04期

【分类号】O561
【下载频次】20

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