Tunable flux through a synthetic Hall tube of neutral fermions
Tunable flux through a synthetic Hall tube of neutral fermions
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DOI：
10.1103/physreva.102.063327
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发表时间：
2020-02
影响因子：
2.9
通讯作者：
Xiwang Luo;Jing Zhang;Chuanwei Zhang
中科院分区：
文献类型：
--
作者：
Xiwang Luo;Jing Zhang;Chuanwei Zhang
磁通量可调的霍尔管是研究量子霍尔物理的一种重要几何结构，但在真实的空间中的实验实现仍具有挑战性。在这里，我们提出了实现一个合成霍尔管与可调谐通量的一维光学晶格与合成环的尺寸定义的原子超精细状态。我们研究了磁通对系统拓扑结构的影响，并研究了其猝灭动力学。利用可调谐磁通，我们展示了如何实现拓扑电荷泵。最后，我们表明，最近观察到的淬火动力学在一个合成霍尔管可以解释的随机磁通存在于实验中。
Hall tube with a tunable flux is an important geometry for studying quantum Hall physics, but its experimental realization in real space is still challenging. Here, we propose to realize a synthetic Hall tube with tunable flux in a one-dimensional optical lattice with the synthetic ring dimension defined by atomic hyperfine states. We investigate the effects of the flux on the system topology and study its quench dynamics. Utilizing the tunable flux, we show how to realize topological charge pumping. Finally, we show that the recently observed quench dynamics in a synthetic Hall tube can be explained by the random flux existing in the experiment.