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arXiv · 2312.13589

The anomalous Floquet Anderson insulator in a continuously driven optical lattice

Arijit Dutta·Efe Sen·Jun-Hui Zheng·Monika Aidelsburger·Walter Hofstetter
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Abstract

The anomalous Floquet Anderson insulator (AFAI) has been theoretically predicted in step-wise periodically driven models, but its stability under more general driving protocols hasn't been determined. We show that adding disorder to the anomalous Floquet topological insulator realized with a continuous driving protocol in the experiment by K. Wintersperger et. al., Nat. Phys. $\textbf{16}$, 1058 (2020), supports an AFAI phase, where, for a range of disorder strengths, all the time averaged bulk states become localized, while the pumped charge in a Laughlin pump setup remains quantized.

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Arijit Dutta, Efe Sen, Jun-Hui Zheng, Monika Aidelsburger, Walter Hofstetter. 2023-12-21. The anomalous Floquet Anderson insulator in a continuously driven optical lattice. https://doi.org/10.1103/physrevb.109.l121114

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