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The on-chip integration of quantum light sources and nonlinear elements posesa serious challenge to the development of a scalable photonic platform forquantum information and communication. In this work we demonstrate thepotential of a novel hybrid technology which combines single organic moleculesas quantum emitters and dielectric chips, consisting of ridge waveguides andgrating far-field couplers. Dibenzoterrylene molecules in thin anthracenecrystals exhibit long-term photostability, easy fabrication methods, almostunitary quantum yield and life-time limited emission at cryogenic temperatures.We couple such single emitters to silicon nitride ridge waveguide with acoupling efficiency of up to 42+/-2 %, considering both propagation directions.The platform is devised to support both on-chip and free-space single photonprocessing.

Photostable molecules on chip: integrated single photon sources for quantum technologies