Observation of Rydberg Blockade Induced by a Single Ion.
Observation of Rydberg Blockade Induced by a Single Ion.
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DOI：
10.1103/physrevlett.121.193401
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发表时间：
2018-09
影响因子：
8.6
通讯作者：
F. Engel;Thomas Dieterle;T. Schmid;Christian Tomschitz;C. Veit;Nicolas Zuber;R. Low;T. Pfau;F. Meinert
中科院分区：
文献类型：
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作者：
F. Engel;Thomas Dieterle;T. Schmid;Christian Tomschitz;C. Veit;Nicolas Zuber;R. Low;T. Pfau;F. Meinert
我们研究了一个高度激发的超冷里德伯原子的单离子的长程相互作用，并报告了在几十微米的距离内介导的离子诱导的里德伯激发阻断的直接观察。我们的混合离子原子系统是直接从超冷原子系综通过近阈值光电离的单一里德伯激发，采用双光子方案，特别适合于产生一个非常低的能量离子。离子的运动由小电场精确控制，这使我们能够分析一系列主要量子数的封锁机制。最后，我们探讨了离子作为一个高灵敏度，基于单原子的电场传感器的能力。观察到的离子-里德伯-原子相互作用是当前感兴趣的纠缠产生或研究超冷化学的混合离子-原子系统。
We study the long-range interaction of a single ion with a highly excited ultracold Rydberg atom and report on the direct observation of an ion-induced Rydberg excitation blockade mediated over tens of micrometer distances. Our hybrid ion-atom system is directly produced from an ultracold atomic ensemble via near-threshold photoionization of a single Rydberg excitation, employing a two-photon scheme that is specifically suited for generating a very low-energy ion. The ion's motion is precisely controlled by small electric fields, which allows us to analyze the blockade mechanism for a range of principal quantum numbers. Finally, we explore the capability of the ion as a high-sensitivity, single-atom-based electric field sensor. The observed ion-Rydberg-atom interaction is of current interest for entanglement generation or studies of ultracold chemistry in hybrid ion-atom systems.