Photostable Molecules on Chip: Integrated Sources of Nonclassical Light

Year: 2018

Authors: Lombardi P.; Ovvyan A. P.; Pazzagli S.; Mazzamuto G.; Kewes G.; Neitzke O.; Gruhler N.; Benson O.; Pernice W. H. P.; Cataliotti F. S.; Toninelli C.

Autors Affiliation: CNR, Ist Nazl Ott, Via Carrara 1, I-50019 Florence, Italy; Univ Firenze, LENS, Via Carrara 1, I-50019 Florence, Italy; Westfalische Wilhelms Univ Munster, Phys Inst, Heisenbergstr 11, D-48149 Munster, Germany; Univ Firenze, Dipartimento Fis, Via Sansone 1, I-50019 Florence, Italy; Humboldt Univ, Inst Phys, AG Nanoopt, Newtonstr 15, D-12489 Berlin, Germany

Abstract: The on-chip integration of quantum light sources and nonlinear elements constitutes a major step toward scalable photon-based quantum information processing and communication In this work we demonstrate the potential of a hybrid technology that combines organic molecule-based quantum emitters and dielectric chips consisting of ridge waveguides and grating far-field couplers. In particular, dibenzoterrylene molecules in thin anthracene crystals are used as single-photon sources, exhibiting long-term photostability, easy fabrication methods, almost unitary quantum yield, and lifetime-limited emission at cryogenic temperatures. We couple such single emitters to silicon nitride ridge waveguides, showing a coupling efficiency of up to 42 +/- 2% over both propagation directions. Our results open a novel path toward a fully integrated and scalable photon processing platform.

Journal/Review: ACS PHOTONICS

Volume: 5 (1)      Pages from: 126  to: 132

More Information: The authors would like to thank F. Sgrignuoli for helping with numerical simulations, B. Tiribilli for inspection of the samples by atomic force microscopy, D. S. Wiersma for access to clean room facilities, M. Bellini and C. Corsi for Ti:sapphire operation, and S. Diewald for help with electron beam lithography. This work benefited from the COST Action MP1403 (Nanoscale Quantum Optics). It is supported by the Erasmus Mundus Doctorate Program Europhotonics (Grant No. 159224-1-2009-1-FR-ERA MUNDUS-EMJD), by the Fondazione Cassa di Risparmio di Firenze (GRANCASSA), MIUR program Atom-Based Nanotechnology, and by the Deutsche Forschungs Gemeinschaft (DFG) through the subprojects B2 and B10 within the Collaborative Research Center (CRC) 951 (HIOS).
KeyWords: Elementary particle sources; Light; Light sources; Molecules; Particle beams; Photons; Quantum optics; Silicon nitride; Waveguides, Anthracene crystals; Coupling efficiency; Cryogenic temperatures; Non-classical lights; Processing platform; Propagation direction; Quantum-information processing; Single-photon source; Ridge waveguides
DOI: 10.1021/acsphotonics.7b00521

Citations: 51
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