Production of Degenerate Fermi Gases of ~6Li Atoms in an Optical Dipole Trap  

作　　者：Xiang-Chuan Yan Da-Li Sun Lu Wang Jing Min Shi-Guo Peng Kai-Jun Jiang 严祥传;孙大立;王璐;闵靖;彭世国;江开军(State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Institute of Physics and Mathematics,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430071,China;Center for Cold Atom Physics,Chinese Academy of Sciences,Wuhan 430071,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Institute of Physics and Mathematics,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430071,China [2]Center for Cold Atom Physics,Chinese Academy of Sciences,Wuhan 430071,China [3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Physics Letters》2021年第5期67-71,共5页中国物理快报（英文版）

基　　金：Supported by the National Key Research and Development Program of China (Grant No.2016YFA0301503);the National Natural Science Foundation of China (Grant Nos.11674358,11434015,and 11974384);the Chinese Academy of Sciences (Grant No.YJKYYQ20170025);K.C.Wong Education Foundation (Grant No.GJTD-2019-15)。

摘　　要：We report the experimental production of degenerate Fermi gases of 6 Li atoms in an optical dipole trap.The gray-molasses technique is carried out to decrease the atomic temperature to 57 μK,which facilitates the efficient loading of cold atoms into the optical dipole trap.The Fermi degeneracy is achieved by evaporative cooling of a two-spin mixture of ~6 Li atoms on the Feshbach resonance.The degenerate atom number per spin is 3.5×10^(4),and the reduced temperature T/T_F is as low as 0.1,where T_F is the Fermi temperature of the non-interacting Fermi gas.We also observe the anisotropic expansion of the atom cloud in the strongly interacting regime.

关 键 词：RED Production of Degenerate Fermi Gases of Atoms in an Optical Dipole Trap 

分 类 号：O562[理学—原子与分子物理]