论文标题
Ultracold地基型$^{23} $ Na $^{87} $ rb分子的各向异性极化
Anisotropic Polarizability of Ultracold Ground-state $^{23}$Na$^{87}$Rb Molecules
论文作者
论文摘要
我们报告了超速基态$^{23} \ rm {na}^{87} {87} \ rm {rb} $分子的AC极化的测量值。虽然地面旋转状态的极化性$ j = 0 $是各向同性的，但第一个激发旋转状态$ j = 1 $是各向异性的，并且很大程度上取决于光偏振角。我们通过结合陷阱振荡频率测量和高分辨率旋转光谱法，从而获得了极化。随着优化的光偏振角和强度组合，将两个旋转状态之间的差分AC Stark移位的不均匀性最小化，并且观察到旋转相干时间是最长的。
We report measurements of the ac polarizabilities of ultracold ground-state $^{23}\rm{Na}^{87}\rm{Rb}$ molecules. While the polarizability of the ground rotational state $J = 0$ is isotropic, that of the first excited rotational state $J = 1$ is anisotropic and depends strongly on the light polarization angle. We obtain both polarizabilities precisely by combining trap oscillation frequency measurement and high resolution rotational spectroscopy driven by microwave. With the optimized light polarization angle and intensity combination, the nonuniformity of the differential ac Stark shift between the two rotational states is minimized and the rotational coherence time is observed to be the longest.
