Topological Floquet-Thouless Energy Pump

Michael H. Kolodrubetz, Frederik Nathan, Snir Gazit, Takahiro Morimoto, and Joel E. Moore
Phys. Rev. Lett. 120, 150601 – Published 11 April 2018
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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.

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  • Received 23 November 2017
  • Revised 6 February 2018

DOI:https://doi.org/10.1103/PhysRevLett.120.150601

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsAtomic, Molecular & OpticalStatistical Physics & ThermodynamicsQuantum Information, Science & TechnologyNonlinear Dynamics

Authors & Affiliations

Michael H. Kolodrubetz1,2,3, Frederik Nathan4, Snir Gazit2, Takahiro Morimoto2, and Joel E. Moore1,2

  • 1Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 2Department of Physics, University of California, Berkeley, California 94720, USA
  • 3Department of Physics, University of Texas at Dallas, Richardson, Texas 75080, USA
  • 4Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, Copenhagen 2100, Denmark

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Issue

Vol. 120, Iss. 15 — 13 April 2018

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