Generation of cold Rydberg atoms at submicron distances from an optical nanofiber
Generation of cold Rydberg atoms at submicron distances from an optical nanofiber
复制标题
在距光学纳米纤维亚微米距离处生成冷里德伯原子
DOI：
10.1103/physrevresearch.2.012038
复制
发表时间：
2020
影响因子：
4.2
通讯作者：
S. Nic Chormaic
中科院分区：
文献类型：
--
作者：
K. S. Rajasree;T. Ray;K. Karlsson;J. L. Everett;S. Nic Chormaic
我们报道了一个由冷里德伯原子和光学纳米纤维界面组成的可控混合量子系统。利用双光子阶梯型激发，我们在距离纳米纤维表面亚微米的距离上展示了相干和非相干里德伯激发。780 nm的光子，近共振的跃迁，由冷却激光介导，而482 nm的光，近共振的跃迁，由纳米光纤的引导模式介导。用冷原子系综的居群损失率来测量里德伯居群率。建立了一个理论模型来解释结果，并将种群损失率与实验测量的过程的有效拉比频率联系起来。这项工作在研究亚微米距离的里德伯原子-表面相互作用以及在全光纤量子网络中使用冷里德伯原子方面取得了进展。
We report on a controllable, hybrid quantum system consisting of cold Rydberg atoms and an optical nanofiber interface. Using a two-photon ladder-type excitation in, we demonstrate both coherent and incoherent Rydberg excitation at submicron distances from the nanofiber surface. The 780-nm photon, near resonant to thetransition, is mediated by the cooling laser, while the 482-nm light, near resonant to thetransition, is mediated by the guided mode of the nanofiber. The population loss rate of the cold atom ensemble is used to measure the Rydberg population rate. A theoretical model is developed to interpret the results and link the population loss rate to the experimentally measured, effective Rabi frequency of the process. This work makes headway in the study of Rydberg atom-surface interactions at submicron distances and the use of cold Rydberg atoms for all-fibered quantum networks.