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arXiv 1402.4077physics.atom-phquant-ph
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具有各向异性相互作用的三原子系统中强Rydberg阻塞的证明

Demonstration of a strong Rydberg blockade in three-atom systems with anisotropic interactions

Daniel Barredo, Sylvain Ravets, Henning Labuhn, Lucas Béguin, Aline Vernier, Florence Nogrette, Thierry Lahaye, Antoine Browaeys

摘要:

我们研究了三个原子在不同的二维几何形状(线性和三角形配置)的系统中的里德伯封锁。在强封锁制度,我们观察到高对比度,相干集体振荡的单激发概率,和一个几乎完美的范德华封锁。我们的数据是一致的总人口在两倍和三倍激发态低于2%。在部分封锁区,我们直接观察到三角形组态中$|nD\rangle$里德堡态之间范德华相互作用的各向异性。一个简单的模型,只使用独立测量的两体范德华相互作用,完全再现了系统的动力学,没有任何可调参数。这些结果对于可扩展的量子信息处理和中性原子的量子模拟是非常有希望的。

英文摘要:

We study the Rydberg blockade in a system of three atoms arranged in different 2D geometries (linear and triangular configurations). In the strong blockade regime, we observe high-contrast, coherent collective oscillations of the single excitation probability, and an almost perfect van der Waals blockade. Our data is consistent with a total population in doubly and triply excited states below 2%. In the partial blockade regime, we directly observe the anisotropy of the van der Waals interactions between $|nD\rangle$ Rydberg states in the triangular configuration. A simple model, that only uses independently measured two-body van der Waals interactions, fully reproduces the dynamics of the system without any adjustable parameter. These results are extremely promising for scalable quantum information processing and quantum simulation with neutral atoms.

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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