“…This enables implementing various photonic structures that improve the rate of collected photons from emitters through their geometry, e.g. solid-immersion lenses (SIL), , nanopillars, and waveguides. , It also allows for the fabrication of more complex structures, such as photonic crystal cavities , or disk resonators, , that can further boost the photon rate through Purcell enhancement. While nanophotonic cavities offer the highest enhancement among the above-mentioned structures, they rely on complicated fabrication processes, tight restrictions on the emitter placement, and complex methods to keep the emitter on resonance with the structure.…”