Spin-orbit coupling in Bose-Einstein condensate and degenerate Fermi gases

作     者：Peng-Jun Wang Jing Zhang 

作者机构：State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-Electronics Shanxi University Taiyuan 030006 China 

出 版 物：《Frontiers of physics》 (物理学前沿（英文版）)

年 卷 期：2014年第9卷第5期

页      面：598-612页

核心收录：

学科分类：07[理学] 0704[理学-天文学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：Acknowledgements This work was supported by the National Basic Research Program of China (Grant No. 2011CB921601)  the National Natural Science Foundation of China (NSFC  Grant No. 11234008)  NSFC Project for Excellent Research Team (Grant No. 61121064)  and Doctoral Program Foundation of the Ministry of Education China (Grant No. 20111401130001) 

主　　题：spin-orbit coupling Bose Einstein condensate Fermi gases topological change momentum-resolved radio-frequency spectroscopy momentum-resolved Raman spectroscopy 

摘      要：We review our recent experimental realization and investigation of a spin orbit （SO） coupled Bose Einstein condensate （BEC） and quantum degenerate Fermi gas. By using two counter-propagathlg Ranlan lasers and controlling the different frequency of two R,aman lasers to engineer the atom light interaction, we first study the SO coupling in BEC. Then we study SO coupling in Fermi gas. We, observe the spin dephasing in spin dynamics and momentum distribution asymmetry of the equilibrium state as halhnarks of SO coupling in a Fermi gas. To clearly reveal the, property of SO coupling Fermi gas, we also study the momentmn-resolved radio-frequency spectroscopy which characterizes the energy momentum dispersion and spin composition of the quantum states. We observe the change of errmion surfaces in different helieity branches with different atomic density, which indicates that a Lifshitz transition of the Fermi surface topology change can be found by further cooling the system. At last, we study the momentum-resolved Raman spectroscopy of an ultracoht Fermi gas.