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.
- 30 W, sub-kHz frequency-locked laser at 532 nm. Optics Express 26, 33756 (2018).
- Feshbach spectroscopy of an ultracold K41−Li6 mixture and K41 atoms. Physical Review A 98, 022704 (2018).
- A quantum degenerate Bose–Fermi mixture of 41 K and 6 Li. Journal of Physics B: Atomic, Molecular and Optical Physics 50, 094001 (2017).
- Observation of Coupled Vortex Lattices in a Mass-Imbalance Bose and Fermi Superfluid Mixture. Physical Review Letters 117, 145301 (2016).
- Production of large 41K Bose-Einstein condensates using D1 gray molasses. Physical Review A 94, 033408 (2016).