RF bifurcation of a Josephson junction: microwave embedding circuit requirements

Details RF bifurcation of a Josephson junction: microwave embedding circuit requirements RF bifurcation of a Josephson junction: microwave embedding circuit requirements

2006-12-22

arxiv.org/abs/cond-mat/0612576v1

Physics

Condensed Matter

Superconductivity

Submitted to Phys. Rev. B, 12 pages, 6 figures

Scientific paper

10.1103/PhysRevB.76.014524

A Josephson tunnel junction which is RF-driven near a dynamical bifurcation point can amplify quantum signals. The bifurcation point will exist robustly only if the electrodynamic environment of the junction meets certain criteria. In this article we develop a general formalism for dealing with the non-linear dynamics of Josephson junction embedded in an arbitrary microwave circuit. We find sufficient conditions for the existence of the bifurcation regime: a) the embedding impedance of the junction need to present a resonance at a particular frequency $\omega_{R}$, with the quality factor $Q$ of the resonance and the participation ratio $p$ of the junction satisfying $Qp\gg 1$, b) the drive frequency should be low frequency detuned away from $\omega_{R}$ by more than $\sqrt{3}\omega_{R}/(2Q)$.

Affiliated with

Also associated with

No associations

Rating

RF bifurcation of a Josephson junction: microwave embedding circuit requirements does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with RF bifurcation of a Josephson junction: microwave embedding circuit requirements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and RF bifurcation of a Josephson junction: microwave embedding circuit requirements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-530494