Dynamical analysis of a weakly coupled nonlinear dielectric waveguide --   surface-plasmon model as a new type of Josephson Junction
  We propose that a weakly-coupled nonlinear dielectric waveguide -- surface-plasmon system can be formulated as a new type of Josephson junction. Such a system can be realized along a metal - dielectric interface where the dielectric medium hosts a nonlinear waveguide (e.g. fiber) for soliton propagation. We demonstrate that the system is in close analogy to the bosonic Josephson-Junction (BJJ) of atomic condensates at very low temperatures, yet exhibits different dynamical features. In particular, the inherently dynamic coupling parameter between soliton and surface-plasmon generates self-trapped oscillatory states at nonzero fractional populations with zero and $\pi$ time averaged phase difference. The salient features of the dynamics are presented in the phase space. 
Yasa Ek\c{s}io\u{g}lu, \"Ozg\"ur E. M\"ustecapl{\i}o\u{g}lu and Kaan   G\"uven
physics.optics cond-mat.quant-gas