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arXiv 1306.0320cond-mat.quant-gasquant-ph
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共振驱动格子气中里德堡激发的二维晶体

Two-dimensional crystals of Rydberg excitations in a resonantly driven lattice gas

David Petrosyan

摘要:

原子的里德伯态的共振光激发与它们的强的长程范德华相互作用之间的竞争导致二维格子气中里德伯激发的空间有序,如在Schaufford等人的最近实验中观察到的[Nature 491,87(2012)]。在这里,我们使用半经典的蒙特卡罗模拟,以获得数百个原子在有限大小的晶格定态。我们表明,形成规则的空间结构的里德伯激发在一个系统的大小不断增加,并发现高度亚泊松分布的里德伯激发的数量,其特征在于由一个大的负值的曼德尔Q参数,这是几乎独立的系统大小。

英文摘要:

The competition between resonant optical excitation of Rydberg states of atoms and their strong, long-range van der Waals interaction results in spatial ordering of Rydberg excitations in a two-dimensional lattice gas, as observed in a recent experiment of Schauß et al. [Nature 491, 87 (2012)]. Here we use semiclassical Monte Carlo simulations to obtain stationary states for hundreds of atoms in finite-size lattices. We show the formation of regular spatial structures of Rydberg excitations in a system of increasing size, and find highly sub-Poissonian distribution of the number of Rydberg excitations characterized by a large negative value of the Mandel Q parameter which is nearly independent of the system size.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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