Universal Quantum Fluctuations of a Cavity Mode Driven by a Josephson Junction

Authors

A. D. Armour, University of NottinghamFollow
M. P. Blencowe, Dartmouth CollegeFollow
E. Brahimi, Dartmouth CollegeFollow
A. J. Rimberg, Dartmouth College

Document Type

Article

Publication Date

12-9-2013

Publication Title

Physical Review Letters

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.

DOI

10.1103/PhysRevLett.111.247001

Dartmouth Digital Commons Citation

Armour, A. D.; Blencowe, M. P.; Brahimi, E.; and Rimberg, A. J., "Universal Quantum Fluctuations of a Cavity Mode Driven by a Josephson Junction" (2013). Dartmouth Scholarship. 3521.
https://digitalcommons.dartmouth.edu/facoa/3521