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arXiv · 1502.01817

Ultracold fermions in a cavity-induced artificial magnetic field

Corinna Kollath·Ferdinand Brennecke
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Abstract

We show how a fermionic quantum gas in an optical lattice and coupled to the field of an optical cavity can self-organize into a state in which the spontaneously emerging cavity field amplitude induces an artificial magnetic field. The fermions form either a chiral insulator or a chiral liquid carrying edge currents. The feedback mechanism via the cavity field enables robust and fast switching of the edge currents and the cavity output can be employed for non-destructive measurements of the atomic dynamics.

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Corinna Kollath, Ferdinand Brennecke. 2015-02-06. Ultracold fermions in a cavity-induced artificial magnetic field. https://doi.org/10.1103/physrevlett.116.060401

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