Strongly Coupled Plasmas via Rydberg Blockade of Cold Atoms
Strongly Coupled Plasmas via Rydberg Blockade of Cold Atoms
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DOI：
10.1103/physrevlett.110.253003
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发表时间：
2013-06-18
影响因子：
8.6
通讯作者：
Pohl, T.
中科院分区：
文献类型：
--
作者：
Bannasch, G.;Killian, T. C.;Pohl, T.
我们提出并分析了一种在强耦合区域深处产生超冷中性等离子体的新方案。该方法利用了激发到高位里德堡态的冷原子之间的相互作用封锁，因此不需要对当前的超冷等离子体实验进行实质性扩展。广泛的模拟揭示了由此产生的库仑耦合参数的普遍行为，提供了强相关里德堡气体和超冷等离子体的物理之间的直接联系。该方法被证明可以将目前可达到的温度降低一个数量级以上，这为超冷等离子体研究和冷离子束应用以及现成的实验技术开辟了新的领域。
We propose and analyze a new scheme to produce ultracold neutral plasmas deep in the strongly coupled regime. The method exploits the interaction blockade between cold atoms excited to high-lying Rydberg states and therefore does not require substantial extensions of current ultracold plasma experiments. Extensive simulations reveal a universal behavior of the resulting Coulomb coupling parameter, providing a direct connection between the physics of strongly correlated Rydberg gases and ultracold plasmas. The approach is shown to reduce currently accessible temperatures by more than an order of magnitude, which opens up a new regime for ultracold plasma research and cold ion-beam applications with readily available experimental techniques.