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
• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: CONDENSED MATTER:STRUCTURE,MECHANICAL AND THERMAL PROPERTIES
• 页码范围: 74-78
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/0256-307X/38/5/056701

摘要

We report the experimental production of degenerate Fermi gases of 6Li 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 6Li atoms on the Feshbach resonance.The degenerate atom number per spin is 3.5 × 104,and the reduced temperature T/TF is as low as 0.1,where TF 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.