Quadrature-Squeezed Light from Emitters in Optical Nanostructures

We discuss the concept of quadrature-squeezed light and give an overview of its applications and its relevance for quantum nanophotonics. The state-of-the-art in its detection and generation is briefly reviewed, placing special emphasis on resonance fluorescence from single emitters. We show how nanostructures allow tailoring the generation of squeezed light from a two-level emitter and from two emitters that interact through the nanoarchitecture. Finally, we comment on the future prospects of nanostructured environments for improved sources of squeezed light.