Efficient quantum light sources and non-linear optical elements at the few photon level are the basic
ingredients for most applications in nano and quantum technologies. On the other hand, a scalable platform for quantum ICT typically requires reliable light matter interfaces and on-chip integration. In this work we demonstrate the potential of a novel hybrid technology which combines single organic molecules as quantum emitters and dielectric chips .
Dibenzoterrylene molecules in anthracene crystals (DBT:Ac) are particularly suitable quantum systems for this task, since they exhibit long-term photostability in thin samples , easy fabrication methods and life-time limited emission at cryogenic temperatures .
We demonstrate at room temperature the emission of single photons from DBT molecules into ridge waveguides with a branching ratio up to 40%. The overall single-photon source efficiency, including emission into the guided mode, propagation losses, and emission into a quasi-gaussian mode in free space, is estimated around 16%. These results are competitive with state-of-the-art single photon emission into propagating guided modes from solid state systems , while offering a novel platform with unprecedented versatility.
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 I. Zadeh et al., Nano Lett. 16, 2289 (2016); R. S. Daveau et al., Arxiv: 1610.08670v1 (2016).
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Costanza Toninelli, Pietro E. Lombardi, Anna P. Ovvyan, Sofia Pazzagli, Giacomo Mazzamuto, Günter Kewes, Oliver Neitzke, Nico Gruhler, Oliver Benson, Wolfram H. P. Pernice, and Francesco S. Cataliotti, "Photostable molecules on chip: integrated single photon sources for quantum technologies (Conference Presentation)," Proc. SPIE 10358, Quantum Photonic Devices, 103580C (Presented at SPIE Nanoscience + Engineering: August 06, 2017; Published: 3 October 2017); https://doi.org/10.1117/12.2275257.5597185661001.
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