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arXiv:1905.06321 [quant-ph]AbstractReferencesReviewsResources

Hybrid plasmonic waveguide coupling of photons from a single molecule

Samuele Grandi, Michael P. Nielsen, Javier Cambiasso, Sebastien Boissier, Kyle D. Major, Christopher Reardon, Thomas F. Krauss, Rupert F. Oulton, E. A. Hinds, Alex S. Clark

Published 2019-05-15Version 1

We demonstrate the emission of photons from a single molecule into a hybrid gap plasmon waveguide (HGPW). Crystals of anthracene, doped with dibenzoterrylene (DBT), are grown on top of the waveguides. We investigate a single DBT molecule coupled to the plasmonic region of one of the guides, and determine its in-plane orientation, excited state lifetime and saturation intensity. The molecule emits light into the guide, which is remotely out-coupled by a grating. The second-order auto-correlation and cross-correlation functions show that the emitter is a single molecule and that the light emerging from the grating comes from that molecule. The coupling efficiency is found to be $\beta_{WG}=11.6(1.5)\%$. This type of structure is promising for building new functionality into quantum-photonic circuits, where localised regions of strong emitter-guide coupling can be interconnected by low-loss dielectric guides.

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