Quantized large-bias current in the anomalous Floquet-Anderson insulator

ORAL

Abstract

We study two-terminal transport through two-dimensional periodically driven systems in which all bulk Floquet eigenstates are localized by disorder. We focus on the Anomalous Floquet-Anderson Insulator (AFAI) phase, a topologically-nontrivial phase within this class, which hosts topologically protected chiral edge modes coexisting with its fully localized bulk. We show that the unique properties of the AFAI yield remarkable far-from-equilibrium transport signatures: for a large bias between leads, a quantized amount of charge is transported through the system each driving period. Upon increasing the bias, the chiral Floquet edge mode connecting source to drain becomes fully occupied and the current rapidly approaches its quantized value.

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Presenters

  • Netanel Lindner

    Physics, Technion, Technion, Physics, Technion - Israel Institute of Technology, Technion - Israel Institute of Technology, Physics, Technion Institute of Technology

Authors

  • Netanel Lindner

    Physics, Technion, Technion, Physics, Technion - Israel Institute of Technology, Technion - Israel Institute of Technology, Physics, Technion Institute of Technology

  • Arijit Kundu

    Physics, Indian Institute of Technology Kanpur, Dept. of Physics, Indian Institute of Technology

  • Mark Rudner

    Niels Bohr Institute, Physics, Niels Bohr International Academy and Center for Quantum Devices, University of Copenhagen, Center for Quantum Devices and Niels Bohr International Academy, Unviersity of Copenhagen, Niels Bohr Institute, Copenhagen University

  • Erez Berg

    Weizmann Institute of Science, Univ of Chicago, University of Chicago, James Frank Institute, Univ of Chicago, Physics, University of Chicago, Unversity of Chicago, Department of Physics, University of Chicago