Universal scaling in a strongly interacting Rydberg gas
Universal scaling in a strongly interacting Rydberg gas
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DOI：
10.1103/physreva.80.033422
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发表时间：
2009-09-01
影响因子：
2.9
通讯作者：
Pfau, Tilman
中科院分区：
文献类型：
--
作者：
Loew, Robert;Weimer, Hendrik;Pfau, Tilman
我们研究了一种由超冷原子共振驱动进入强相互作用里德堡态的气体。空间冻结的有效伪自旋系统的长程行为由一组无量纲参数决定，我们发现实验数据对激发动力学和里德堡激发的饱和度表现出代数标度律。平均场计算和数值模拟提供了与实验结果很好的一致性，并证明了强相互作用冻结里德堡气体的普适性。
We study a gas of ultracold atoms resonantly driven into a strongly interacting Rydberg state. The long-distance behavior of the spatially frozen effective pseudospin system is determined by a set of dimensionless parameters, and we find that the experimental data exhibit algebraic scaling laws for the excitation dynamics and the saturation of Rydberg excitation. Mean-field calculations as well as numerical simulations provide an excellent agreement with the experimental finding and are evidence for universality in a strongly interacting frozen Rydberg gas.