Universal quantum fluctuations of a cavity mode driven by a Josephson junction
Mesoscale and Nanoscale Physics
2013-12-12 v1
Abstract
We analyze the quantum dynamics of a superconducting cavity coupled to a voltage biased Josephson junction. The cavity is strongly excited at resonances where the voltage energy lost by a Cooper pair traversing the circuit is a multiple of the cavity photon energy. We find that the resonances are accompanied by substantial squeezing of the quantum fluctuations of the cavity over a broad range of parameters and are able to identify regimes where the fluctuations in the system take on universal values.
Cite
@article{arxiv.1307.2498,
title = {Universal quantum fluctuations of a cavity mode driven by a Josephson junction},
author = {A. D. Armour and M. P. Blencowe and E. Brahimi and A. J. Rimberg},
journal= {arXiv preprint arXiv:1307.2498},
year = {2013}
}
Comments
5 pages, 4 figures