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