Quantum simulation with ultracold mixture of Lithium and potassium atoms

Principal investigator

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).