Study on novel phase in multi-component quantum degenerate gases

我们用Yb对Li进行共振蒸发冷却，成功地获得了Li和Yb的量子简并混合物。我们研制了波长为1064 nm的三维光学晶格系统，并通过加载LiYb量子简并混合物观察了晶格效应。我们提出了利用基态Li与亚稳态激发态Yb之间的Feshbach共振来控制新的原子-原子相互作用的新方法，并证实了我们在三维光学激光器中成功地激发了Yb原子的激发态。

We successfully obtained quantum degeneracy mixture of Li and Yb by sympathetic evaporative cooling of Li by Yb. We developed three-dimensional optical lattice system whose wavelength was 1064nm, and observed lattice effects by loading LiYb quantum degenerate mixture. We proposed new control method of new atom-atom interaction by use of Feshbach resonance between Li in the ground state and Yb in metastable excited state, and confirmed our successfully excitation to the excited state of Yb atoms in three-dimensional optical lattce.