Reaching the quantum Hall regime with rotating Rydberg-dressed atoms
Reaching the quantum Hall regime with rotating Rydberg-dressed atoms
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DOI：
10.1103/physrevresearch.2.023290
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发表时间：
2020-06-05
影响因子：
4.2
通讯作者：
Trombettoni, Andrea
中科院分区：
文献类型：
--
作者：
Burrello, Michele;Lesanovsky, Igor;Trombettoni, Andrea
尽管量子气体领域取得了惊人的进展，但其备受期待的应用之一——量子霍尔态的模拟——仍然难以捉摸：迄今为止，所有实验方法都未能达到原子密度和涡旋密度之间足够小的比率。在本文中，我们考虑在磁阱中旋转里德伯修饰的原子：这些气体提供强烈且可调节的非局域排斥相互作用和非常低的密度；因此，它们提供了一个达到量子霍尔体系的特殊平台。基于Lindemann准则和对系统长度尺度相互作用的分析，我们表明存在一个修整参数的最佳值，该值可以最小化系统填充因子与其进入霍尔状态的临界值之间的比率，从而使得在现实条件下超过1000个原子达到这种强相关相成为可能。
Despite the striking progress in the field of quantum gases, one of their much anticipated applications-the simulation of quantum Hall states-remains elusive: all experimental approaches so far have failed in reaching a sufficiently small ratio between atom and vortex densities. In this paper we consider rotating Rydberg-dressed atoms in magnetic traps: these gases offer strong and tunable nonlocal repulsive interactions and very low densities; hence they provide an exceptional platform to reach the quantum Hall regime. Based on the Lindemann criterion and the analysis of the interplay of the length scales of the system, we show that there exists an optimal value of the dressing parameters that minimizes the ratio between the filling factor of the system and its critical value to enter the Hall regime, thus making it possible to reach this strongly correlated phase for more than 1000 atoms under realistic conditions.