Topological Floquet-Thouless energy pump
Quantum Gases
2018-04-18 v2 Disordered Systems and Neural Networks
Quantum Physics
Abstract
We explore adiabatic pumping in the presence of 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.
Cite
@article{arxiv.1711.00014,
title = {Topological Floquet-Thouless energy pump},
author = {Michael H. Kolodrubetz and Frederik Nathan and Snir Gazit and Takahiro Morimoto and Joel E. Moore},
journal= {arXiv preprint arXiv:1711.00014},
year = {2018}
}
Comments
4 pages, 4 figures. Minor replacements and references added