论文标题
$^6 $ li和$^{53} $ CR原子的双层费米混合物
Double-degenerate Fermi mixtures of $^6$Li and $^{53}$Cr atoms
论文作者
论文摘要
我们报道了超速菲尔米锂和铬原子的新型混合物的实现。基于一种全光能的方法，总体占空比约为13秒，我们生产的大型和退化样本超过2 $ \ times 10^5 $^6 $ li原子和$ 10^5 $ $^{53} $ cr原子，这两个物种均表现出大约$ t/t/t_ {f} $ t_ {f} $ = 0.25 $ t_ = 0.25。另外，通过剥削交叉的双偶极偶极子陷阱，我们几乎可以独立地独立地改变两个组件的脱位密度和程度，并广泛调整锂与奇物属密度比。我们的$^{6} $ li - $^{53} $ cr fermi混合物为调查各种异国情调的少数几个和多体量子的制度开辟了道路，并且它似乎是实现超速磁性极性分子的最佳系统，以电气和磁性二波尔的表征。最终，我们的策略还提供了一种有效的途径，以产生超低$^{53} $ cr原子的偶极费米气体或自旋混合。
We report on the realization of a novel degenerate mixture of ultracold fermionic lithium and chromium atoms. Based on an all-optical approach, with an overall duty-cycle of about 13 seconds, we produce large and degenerate samples of more than 2$\times 10^5$ $^6$Li atoms and $10^5$ $^{53}$Cr atoms, with both species exhibiting normalized temperatures of about $T/T_{F}$=0.25. Additionally, through the exploitation of a crossed bichromatic optical dipole trap, we can controllably vary the density and degree of degeneracy of the two components almost independently, and widely tune the lithium-to-chromium density ratio. Our $^{6}$Li-$^{53}$Cr Fermi mixture opens the way to the investigation of a variety of exotic few- and many-body regimes of quantum matter, and it appears as an optimally-suited system to realize ultracold paramagnetic polar molecules, characterized by both electric and magnetic dipole moments. Ultimately, our strategy also provides an efficient pathway to produce dipolar Fermi gases, or spin-mixtures, of ultracold $^{53}$Cr atoms.
