超冷异质结YbLi * 分子的光缔合产生
Photoassociative production of ultracold heteronuclear YbLi* molecules
摘要：
报道了在双粒子磁光阱中通过光缔合作用制备超冷异质结YbLi* 分子的实验。陷阱损失谱观察到电子激发态分子的形成接近解离。我们发现在低于Yb（$^1S_0$）+ Li（$^2P_{1/2}$）渐近线的$250\,$ GHz范围内的4个振转态，并观察到$^6$ Li与$^{174}$ Yb、$^{172}$ Yb和$^{176}$ Yb的混合物中的同位素PA线位移。我们还描述了我们的理论从头计算相关的电子势，并利用它来分析和识别线的实验观察到的光谱。
英文摘要：
We report on the production of ultracold heteronuclear YbLi* molecules in a dual-species magneto-optical trap by photoassociation (PA). The formation of the electronically excited molecules close to dissociation was observed by trap loss spectroscopy. We find 4 rovibrational states within a range of $250\,$GHz below the Yb($^1S_0$) + Li($^2P_{1/2}$) asymptote and observe isotopic PA line shifts in mixtures of $^6$Li with $^{174}$Yb, $^{172}$Yb, and $^{176}$Yb. We also describe our theoretical ab-initio calculation for the relevant electronic potentials and utilize it to analyze and identify the lines in the experimentally observed spectrum.
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