Direct observation of dynamical bifurcation in a superfluid Josephson junction.

Citation:

Narayana S, Sato Y. Direct observation of dynamical bifurcation in a superfluid Josephson junction. . Phys Rev Lett 2010;105(20):205302.

Abstract:

We report a direct observation of dynamical bifurcation between two plasma oscillation states of a superfluid Josephson junction. We excite the superfluid plasma resonance into a nonlinear regime by driving below the natural plasma frequency and observe a clear transition between two dynamical states. We also demonstrate bifurcation by changing the potential well with temperature variations.