Coherent superconducting quantum pump
Mesoscale and Nanoscale Physics
2015-05-30 v1 Superconductivity
Abstract
We demonstrate non-adiabatic charge pumping utilizing a sequence of coherent oscillations between a superconducting island and two reservoirs. Our method, based on pulsed quantum state manipulations, allows to speedup charge pumping to a rate which is limited by the coupling between the island and the reservoirs given by the Josephson energy. Our experimental and theoretical studies also demonstrate that relaxation can be employed to reset the pump and avoid accumulation of errors due to non-ideal control pulses.
Cite
@article{arxiv.1109.5543,
title = {Coherent superconducting quantum pump},
author = {F. Hoehne and Yu. A. Pashkin and O. V. Astafiev and M. Möttönen and J. P. Pekola and J. S. Tsai},
journal= {arXiv preprint arXiv:1109.5543},
year = {2015}
}
Comments
4 pages, 3 figures