Single Photon Emitters Coupled to Plasmonic Waveguides: A Review

During the last two decades, many research groups have demonstrated coupling of single photon emitters to plasmonic waveguides, promising very high emission enhancements, for applications in quantum technologies. In this review, recent developments within important topic are discussed. Different waveguide–quantum emitter configurations compared from application viewpoint by utilizing a figure-of-merit (FOM) reflecting enhancement, efficiency, and radiation loss. The experimental methods applied obtain coupled systems with FOMs described. Configurations that exploited reinforcing i.e., efficiency funneling emitted into waveguide, also considered as well scalability potential various waveguide platforms. A experiment, which enhanced light–matter interaction is taken advantage of, resulting demonstration non-linearity at level,