Two-plasmon spontaneous emission from a nonlocal epsilon-near-zero material

Abstract

Plasmonics involves the engineering of light-matter interactions and has range of possible uses in the study of quantum phenomenon, but efficient plasmonic sources are required. The authors report a method to achieve efficient two-plasmon spontaneous emission using an epsilon-near-zero material with highly-confined surface plasmon polaritons to simultaneously serve as a two-plasmon emitter for emission acceleration.