Full Counting Statistics of Laser Excited Rydberg Aggregates in a One-Dimensional Geometry
Full Counting Statistics of Laser Excited Rydberg Aggregates in a One-Dimensional Geometry
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DOI：
10.1103/physrevlett.112.013002
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发表时间：
2014-01-07
影响因子：
8.6
通讯作者：
Weidemueller, M.
中科院分区：
文献类型：
--
作者：
Schempp, H.;Guenter, G.;Weidemueller, M.
实验研究了准一维原子气体激发的少体里德伯聚集体的全计数统计。我们测量了非对称激发谱和里德伯数分布的增加的二阶和三阶统计矩，由此我们确定了平均聚合尺寸。估计不同激发过程的速率，我们得出结论，聚集体在初始晶粒周围依次生长。与数值模拟的直接比较证实了这一结论，并揭示了类似液体的空间相关性的存在。我们的研究结果证明了在强相关里德伯气体中消相的重要性，并引入了一种无需成像的方法来研究相互作用的多体量子系统中的空间相关性。
We experimentally study the full counting statistics of few-body Rydberg aggregates excited from a quasi-one-dimensional atomic gas. We measure asymmetric excitation spectra and increased second and third order statistical moments of the Rydberg number distribution, from which we determine the average aggregate size. Estimating rates for different excitation processes we conclude that the aggregates grow sequentially around an initial grain. Direct comparison with numerical simulations confirms this conclusion and reveals the presence of liquidlike spatial correlations. Our findings demonstrate the importance of dephasing in strongly correlated Rydberg gases and introduce a way to study spatial correlations in interacting many-body quantum systems without imaging.