Plasmon-enhanced generation of nonclassical light

Strong light-matter interactions enabled by surface plasmons have given rise to a wide range of photonic, optoelectronic, and chemical functionalities. In recent years, the interest in this research area has focused on the quantum regime, aiming to developing ultracompact nanoscale instruments operating at the single (few) photon(s) level. In this perspective, we provide a general overview of recent experimental and theoretical advances as well as near-future challenges toward the design and implementation of plasmon-empowered quantum optical and photoemitting devices based on the building blocks of nanophotonics technology: metallo-dielectric nanostructures and microscopic light sources.