Collective Excitation of Rydberg-Atom Ensembles beyond the Superatom Model
Collective Excitation of Rydberg-Atom Ensembles beyond the Superatom Model
复制标题
DOI：
10.1103/physrevlett.113.233002
复制
发表时间：
2014-12-02
影响因子：
8.6
通讯作者：
Evers, Joerg
中科院分区：
文献类型：
--
作者：
Gaerttner, Martin;Whitlock, Shannon;Evers, Joerg
在强相互作用里德堡态的激光驱动原子系综中，稳态激发几率通常被大大抑制。相反，在这里，我们确定了一个制度，其中的里德伯激发分数的相互作用增强。这种效应与集体态之间的相干多光子激发引起的多体相干性的建立有关。在现有的实验条件下，激发增强应该是可观察到的，并可能作为一个直接探针的存在下，涉及集体量子态的相干多光子动力学。
In an ensemble of laser-driven atoms involving strongly interacting Rydberg states, the steady-state excitation probability is usually substantially suppressed. In contrast, here we identify a regime in which the Rydberg excited fraction is enhanced by the interaction. This effect is associated with the buildup of many-body coherences induced by coherent multiphoton excitations between collective states. The excitation enhancement should be observable under currently existing experimental conditions and may serve as a direct probe for the presence of coherent multiphoton dynamics involving collective quantum states.