Photoassociation of Trilobite Rydberg Molecules via Resonant Spin-Orbit Coupling
Photoassociation of Trilobite Rydberg Molecules via Resonant Spin-Orbit Coupling
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DOI：
10.1103/physrevlett.118.223001
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发表时间：
2017-06-01
影响因子：
8.6
通讯作者：
Raithel, G.
中科院分区：
文献类型：
--
作者：
Kleinbach, K. S.;Meinert, F.;Raithel, G.
报道了一种强极性三叶里德堡分子光缔合的新方法。这种奇特的超长程二聚体，由一个基态原子通过电中性散射束缚到里德堡电子，从高角动量电子轨道的混合物中继承了它的极性特征。低L字符的缺失阻碍了标准的光联想技术。在这里，我们证明了对于适当的主量子数，在电子中性散射的作用下，轨道运动与微扰核自旋的共振耦合使三叶虫分子势与更传统的S型分子态杂交。这提供了一条将三叶虫分子与大电偶极矩联系起来的一般途径，如高分辨率光谱分析所证明的那样。我们发现三叶态的偶极矩为135(45)D。我们的结果与基于费米模型的理论预测进行了比较。
We report on a novel method for the photoassociation of strongly polar trilobite Rydberg molecules. This exotic ultralong-range dimer, consisting of a ground-state atom bound to the Rydberg electron via electronneutral scattering, inherits its polar character from the admixture of high-angular-momentum electronic orbitals. The absence of low-L character hinders standard photoassociation techniques. Here, we show that for suitable principal quantum numbers the resonant coupling of the orbital motion with the nuclear spin of the perturber, mediated by electron-neutral scattering, hybridizes the trilobite molecular potential with the more conventional S-type molecular state. This provides a general path to associate trilobite molecules with large electric dipole moments, as demonstrated via high-resolution spectroscopy. We find a dipole moment of 135(45) D for the trilobite state. Our results are compared to theoretical predictions based on a Fermi model.