Double-degenerate Bose-Fermi mixture of strontium and lithium

ORAL

Abstract

Quantum mixtures of alkali-metal and alkaline-earth-metal elements provide vast opportunities for studying exotic many-body states and for precision tests of fundamental physics. In this talk, we report the production of the first quantum degenerate mixture of 6Li and 84Sr in a far-off-resonant optical dipole trap. The mixture contains 1.6×105 fermionic 6Li atoms with T/TF=0.33(3) and an almost pure 84Sr BEC with 3.1×105 atoms. We also extract the absolute value of the s-wave scattering length between lithium and strontium by measuring the interspecies thermalization rates.

*This work is supported by the National Key Research and Development Program of China under Grant Nos 2018YFA0306503, and the National Natural Science Foundation of China under Grant Nos 91636213, 91736311, 11574177, 91836302, and 11654001, and Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics (KF201802).

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Publication: Z.-X. Ye, L.-Y. Xie, Z. Guo, X.-B. Ma, G.-R. Wang, L. You, and M. K. Tey, Phys. Rev. A 102, 033307 (2020).

Presenters

  • Zhu-Xiong Ye

    • Tsinghua University

Authors

  • Zhu-Xiong Ye

    • Tsinghua University

  • Li-Yang Xie

    • Tsinghua University

  • Zhen Guo

    • Tsinghua University

  • Xiao-Bin Ma

    • Tsinghua University

  • Gaoren Wang

    • Dalian University of Technology

  • Li You

    • Tsinghua University

  • Meng Khoon Tey

    • Tsinghua University
    • Department of Physics, Tsinghua University
    • State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University; Frontier Science Center for Quantum Information, Beijing 100084, China