Charge qubit driven via the Josephson nonlinearity
Mesoscale and Nanoscale Physics
2015-06-16 v1 Quantum Physics
Abstract
We study the novel nonlinear phenomena that emerge in a charge qubit due to the interplay between a strong microwave flux drive and a periodic Josephson potential. We first analyze the system in terms of the linear Landau-Zener-St\"uckelberg model, and show its inadequacy in a periodic system with several Landau-Zener crossings within a drive period. Experimentally, we probe the quasienergy levels of the driven qubit with an LC-cavity, which requires the use of linear response theory. We also show that our numerical calculations are in good agreement with the experimental data.
Keywords
Cite
@article{arxiv.1307.6032,
title = {Charge qubit driven via the Josephson nonlinearity},
author = {Jani Tuorila and Matti Silveri and Mika Sillanpää and Erkki Thuneberg and Yuriy Makhlin and Pertti Hakonen},
journal= {arXiv preprint arXiv:1307.6032},
year = {2015}
}
Comments
7 pages, 4 figures