Quantum simulation with ultracold mixture of Lithium and potassium atoms

Principal investigator
Introduction

With highly controllable experimental parameters, ultracold mixture of quantum gas has been an ideal platform for studying few- and many-body quantum phenomena such as condensed matter physics, nuclear physics and astrophysics. After several years of efforts and technology innovations, we have built a state-of-the-art experiment system on the ultracold mixture of lithium and potassium atoms. Different mixture systems such as Li6-K41 Bose-Fermi mixture and Li6-K41 Fermi-Fermi mixture can be investigated. In our current Li6-K41 Bose-Fermi system, we have realized double superfluid of fermionic Li6 and bosonic K41 atoms for the first time. Many static and dynamic properties of this Bose-Fermi superfluid such as collective excitation, dynamics of vortex, and equation of state can be further explored.

Related Publications

  • Chen, H. -Z., Liu, X. -P., Wang, X. -Q., Wu, Y. -P., Wang, Y. -X., Yao, X. -C., Chen, Y. -A. & Pan, J. -W. 30 W, sub-kHz frequency-locked laser at 532 nm. Optics Express 26, 33756 (2018).
  • Liu, X. -P., Yao, X. -C., Qi, R., Wang, X. -Q., Wang, Y. -X., Chen, Y. -A. & Pan, J. -W. Feshbach spectroscopy of an ultracold K41−Li6 mixture and K41 atoms. Physical Review A 98, 022704 (2018).
  • Wu, Y. -P., Yao, X. -C., Chen, H. -Z., Liu, X. -P., Wang, X. -Q., Chen, Y. -A. & Pan, J. -W. A quantum degenerate Bose–Fermi mixture of 41 K and 6 Li. Journal of Physics B: Atomic, Molecular and Optical Physics 50, 094001 (2017).
  • Yao, X. -C., Chen, H. -Z., Wu, Y. -P., Liu, X. -P., Wang, X. -Q., Jiang, X., Deng, Y., Chen, Y. -A. & Pan, J. -W. Observation of Coupled Vortex Lattices in a Mass-Imbalance Bose and Fermi Superfluid Mixture. Physical Review Letters 117, 145301 (2016).
  • Chen, H. -Z., Yao, X. -C., Wu, Y. -P., Liu, X. -P., Wang, X. -Q., Wang, Y. -X., Chen, Y. -A. & Pan, J. -W. Production of large 41K Bose-Einstein condensates using D1 gray molasses. Physical Review A 94, 033408 (2016).