Abstract: We describe an effective resonant interaction between two localized wave modes of d ifferent nature: a plasmon polariton at a metal surface and a self-focusing beam (spatial soliton) in a nonlinear dielect ric medium. Propagating in the same direction, they represent an exotic coupled-waveguide system, where th e resonant interaction is controlled by the soliton amplitude. This nonlinear system manifests hybridize d plasmon-soliton eigenmodes, mutual conversion, and nonadiabatic switching, which offer exciting opport unities for manipulation of plasmons via spatial solitons.

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