Production of an ultracold mixture of ^(23)Na^(40)K and ^(40)K

作     者：Xin-Yao Wang Zhen Su Jin Cao Huan Yang Bo Zhao Chun-Li Bai Jian-Wei Pan Xin-Yao Wang;Zhen Su;Jin Cao;Huan Yang;Bo Zhao;Chun-Li Bai;Jian-Wei Pan

作者机构：Beijing National Laboratory for Molecular SciencesKey Laboratory of Molecular Nanostructure and NanotechnologyCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern PhysicsUniversity of Science and Technology of ChinaHefei 230026China Shanghai BranchCAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum PhysicsUniversity of Science and Technology of ChinaShanghai 201315China A Shanghai Research Center for Quantum SciencesShanghai 201315China University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2022年第65卷第2期

页      面：39-43页

核心收录：

学科分类：07[理学] 070203[理学-原子与分子物理] 0702[理学-物理学] 

基　　金：supported by the National Key Research and Development Program of China(Grant No.2018YFA0306502) the National Natural Science Foundation of China(Grant Nos.11521063,11904355) the Chinese Academy of Sciences the Anhui Initiative in Quantum Information Technologies the Shanghai Municipal Science and Technology Major Project(Grant No.2019SHZDZX01) the Shanghai Rising-Star Program(Grant No.20QA1410000) 

主　　题：ultracold molecule Bose-Fermi mixture Feshbach resonance 

摘      要：We report on the production of an ultracold mixture of 2.8×10^(4)^(23)Na^(40)K molecules and 3.3×10^(5)^(40)K atoms at a temperature of about 250 n *** with previous studies,the number of atoms and molecules improved by a factor of about 2,and the temperature reduced by a factor of about *** improvements occur mainly because of the use of a crossed large-volume horizontal dipole trap to load the atoms from a cloverleaf-type magnetic trap,and a large-volume three-beam dipole trap to perform optical evaporative *** achieving the mode-matching loading,this method avoids evaporative cooling in a decompressed cloverleaf magnetic trap,which is sensitive to magnetic field *** characterize an atom-molecule Feshbach resonance using the ultracold atom-molecule *** enhancement of particle number and temperature significantly improves the signal-to-noise ratio,and enables us to refine the location and width of the Feshbach resonance.