Topological Floquet-Thouless Energy Pump

Michael H. Kolodrubetz, Frederik Nathan, Snir Gazit, Takahiro Morimoto, Joel E. Moore

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

We explore adiabatic pumping in the presence of a periodic drive, finding a new phase in which the topologically quantized pumped quantity is energy rather than charge. The topological invariant is given by the winding number of the micromotion with respect to time within each cycle, momentum, and adiabatic tuning parameter. We show numerically that this pump is highly robust against both disorder and interactions, breaking down at large values of either in a manner identical to the Thouless charge pump. Finally, we suggest experimental protocols for measuring this phenomenon.

Original languageAmerican English
Article number150601
JournalPhysical Review Letters
Volume120
Issue number15
DOIs
StatePublished - 11 Apr 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2018 American Physical Society.

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