Experimental Observation of Spin-Exchange in Ultracold Fermi GasesSupported by the National Key Research and Development Program of China under Grant Nos 2016YFA0301600 and 2016YFA0301602, the National Natural Science Foundation of China under Grant Nos 11234008, 11474188 and 11704234, and the Fund for Shanxi '1331 Project' Key Subjects Construction

We experimentally study the spin exchange collision in ultracold 40K Fermi gases. The quadratic Zeeman shift, trap potential and temperature of atomic cloud will influence on the spin changing dynamics. Dependences of the spin components populations on the external bias magnetic field, the optical t...

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Bibliographic Details
Published inChinese physics letters Vol. 35; no. 3
Main Authors Peng, Peng, Huang, Liang-Hui, Li, Dong-Hao, Meng, Zeng-Ming, Wang, Peng-Jun, Zhang, Jing
Format Journal Article
LanguageEnglish
Published Chinese Physical Society and IOP Publishing Ltd 01.03.2018
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Summary:We experimentally study the spin exchange collision in ultracold 40K Fermi gases. The quadratic Zeeman shift, trap potential and temperature of atomic cloud will influence on the spin changing dynamics. Dependences of the spin components populations on the external bias magnetic field, the optical trap depth and the temperature of atomic cloud are experimentally investigated. The spin exchange from the initial states to the final state are observed for different initial states. This work shows an interesting process of reaching equilibrium by redistribution among the spin states with the spin exchange collision in an ultracold large-spin Fermi gas.
ISSN:0256-307X
DOI:10.1088/0256-307X/35/3/033401