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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.

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