Ultracold Fermions in a Cavity-Induced Artificial Magnetic Field
Ultracold Fermions in a Cavity-Induced Artificial Magnetic Field
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DOI：
10.1103/physrevlett.116.060401
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发表时间：
2016-02-12
影响因子：
8.6
通讯作者：
Brennecke, Ferdinand
中科院分区：
文献类型：
--
作者：
Kollath, Corinna;Sheikhan, Ameneh;Brennecke, Ferdinand
我们提出了如何限制在一个光晶格和耦合到一个光腔的费米量子气体可以自组织成一个状态，自发出现的腔场振幅诱导人工磁场。费米子要么形成手征绝缘体，要么形成携带手征电流的手征液体。通过动态腔场的反馈机制能够实现手征相位在时间上的鲁棒和快速切换，并且腔输出可以用于手征电流的直接无损测量。
We propose how a fermionic quantum gas confined to an optical lattice and coupled to an optical cavity can self-organize into a state where the spontaneously emerging cavity field amplitude induces an artificial magnetic field. The fermions form either a chiral insulator or a chiral liquid carrying chiral currents. The feedback mechanism via the dynamical cavity field enables robust and fast switching in time of the chiral phases, and the cavity output can be employed for a direct nondestructive measurement of the chiral current.