论文标题
准备长寿命，非自动化的圆rydberg斜线状态
Preparation of Long-Lived, Non-Autoionizing Circular Rydberg States of Strontium
论文作者
论文摘要
碱土rydberg原子是量子技术的非常有前途的工具。它们高度激发的外电子为它们提供了Rydberg原子的显着特性，尤其是与外部磁场或其他Rydberg原子构成了巨大的耦合，而离子核心保留了光学活性电子。然而，当核心激发核心时，低角度摩托明州rydberg状态几乎立即自动化。在这里，我们证明，元素圆形rydberg原子具有4D $亚稳态水平的核心兴奋的核心原子不受数量超过几毫秒的时间尺度的自动化。这使得可以捕获和激光酷rydberg原子。此外，由于核心光学操纵，我们观察到了三胞胎过渡的单线，从而通往量子微波炉到光学接口。
Alkaline earth Rydberg atoms are very promising tools for quantum technologies. Their highly excited outer electron provides them with the remarkable properties of Rydberg atoms and, notably, with a huge coupling to external fields or to other Rydberg atoms while the ionic core retains an optically active electron. However, low angular-momentum Rydberg states suffer almost immediate autoionization when the core is excited. Here, we demonstrate that strontium circular Rydberg atoms with a core excited in a $4D$ metastable level are impervious to autoionization over more than a few millisecond time scale. This makes it possible to trap and laser-cool Rydberg atoms. Moreover, we observe singlet to triplet transitions due to the core optical manipulations, opening the way to a quantum microwave to optical interface.
