Topological frequency conversion in strongly driven quantum systems

Invited

Abstract

When a small quantum system is subject to multiple periodic drives, it may realize multidimensional topological phases. In my talk, I will explain how to make such constructions, and show how a spin-1/2 particle driven by two elliptically-polarized light beams could realize the Bernevig-Hughes-Zhang model of 2 topological insulators. The observable consequence of such a construction is quantized pumping of energy between the two drive sources. I will also show that the topological pumping quantization is not only robust against smooth temporal disorder, but even enforced by it.

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Presenters

  • Gil Refael

    California Institute of Technology, Caltech, Physics, California Institute of Technology, Physics, Caltech

Authors

  • Gil Refael

    California Institute of Technology, Caltech, Physics, California Institute of Technology, Physics, Caltech

  • Ivar Martin

    Argonne Natl Lab, Argonne National Laboratory, Materials Science Division, Argonne National Laboratory, Argonne NL

  • Frederik Nathan

    Niels Bohr Institute, Copenhagen University, Physics, University of Copenhagen

  • Bertrand Halperin

    Harvard University, Harvard Univ, Physics, Harvard University