Quantum chaos in the mesoscopic device for the Josephson flux qubit
Superconductivity
2013-05-29 v2 Mesoscale and Nanoscale Physics
Quantum Physics
Abstract
We show that the three-junction SQUID device designed for the Josephson flux qubit can be used to study quantum chaos when operated at high energies. In the parameter region where the system is classically chaotic we analyze the spectral statistics. The nearest neighbor distributions are well fitted by the Berry Robnik theory employing as free parameters the pure classical measures of the chaotic and regular regions of phase space in the different energy regions. The phase space representation of the wave functions is obtained via the Husimi distributions and the localization of the states on classical structures is analyzed.
Keywords
Cite
@article{arxiv.cond-mat/0612288,
title = {Quantum chaos in the mesoscopic device for the Josephson flux qubit},
author = {Ezequiel N. Pozzo and Daniel Dominguez and Maria Jose Sanchez},
journal= {arXiv preprint arXiv:cond-mat/0612288},
year = {2013}
}
Comments
Final version, to be published in Phys. Rev. B. References added, introduction and conclusions improved