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.

*NSF through DMR-1410435, Institute of Quantum Information and Mat-
ter, a NSF Frontier center funded in part by the Gordon
and Betty Moore Foundation, Packard Founda-
tion.

–

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