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Hybrid plasmonic waveguide coupling of photons from a single molecule

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  • S. Grandi
  • M. P. Nielsen
  • J. Cambiasso
  • S. Boissier
  • K. D. Major
  • C. Reardon
  • T. F. Krauss
  • R. F. Oulton
  • E. A. Hinds
  • A. S. Clark


Publication details

JournalAPL Photonics
DateAccepted/In press - 1 Aug 2019
DatePublished (current) - 22 Aug 2019
Issue number8
Number of pages7
Pages (from-to)1-7
Original languageEnglish


We demonstrate the emission of photons from a single molecule into a hybrid gap plasmon waveguide. 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 autocorrelation 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 βWG = 11.6(1.5)%. This type of structure is promising for building new functionality into quantum-photonic circuits, where localized regions of strong emitter-guide coupling can be interconnected by low-loss dielectric guides.

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© Author(s) 2019

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