Dissipation engineered directional filter for quantum ratchets
Mesoscale and Nanoscale Physics
2021-03-24 v1
Abstract
We demonstrate transport rectification in a hermitian Hamiltonian quantum ratchet by a dissipative, dynamic impurity. While the bulk of the ratchet supports transport in both directions, the properly designed loss function of the local impurity acts as a direction-dependent filter for the moving states. We analyse this scheme theoretically by making use of Floquet-S-Matrix theory. In addition, we provide the direct experimental observation of one-way transmittance in periodically modulated plasmonic waveguide arrays containing a local impurity with engineered losses.
Keywords
Cite
@article{arxiv.2010.16150,
title = {Dissipation engineered directional filter for quantum ratchets},
author = {Zlata Fedorova and Christoph Dauer and Anna Sidorenko and Sebastian Eggert and Johann Kroha and Stefan Linden},
journal= {arXiv preprint arXiv:2010.16150},
year = {2021}
}