Charge qubit driven via the Josephson nonlinearity

Autor:	Tuorila, Jani, Silveri, Matti, Sillanpää, Mika, Thuneberg, Erkki, Makhlin, Yuriy, Hakonen, Pertti
Rok vydání:	2013
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Quantum Physics
Zdroj:	Supercond. Sci. Technol. 26, 124001 (2013)
Druh dokumentu:	Working Paper
DOI:	10.1088/0953-2048/26/12/124001
Popis:	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. Comment: 7 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1307.6032 Zobrazit plný text záznamu View this record from Arxiv