Coupling colloidal quantum dots to a dielectric slot-waveguide

Niels M. Israelsen*, Ying-Wei Lu, Ulrik L. Andersen, Alexander Huck

*Corresponding author for this work

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The coupling between single photon emitters and integrated photonic circuits is an emerging topic relevant for quantum information science and other nanophotonic applications. We investigate the coupling between a hybrid system of colloidal quantum dots and propagating modes of a silicon nitride waveguide system. We furthermore explore the local density of optical states of the system by using a scanning probe technique and find that the quantum dots couple significantly to the photonic circuit. Our results indicate that a scalable slot-waveguide might serve as a promising platform in future developments of integrated quantum circuitry.
Original languageEnglish
Article number085003
JournalJournal of Physics Communications
Issue number8
Number of pages7
Publication statusPublished - 2020


  • Quantum dots
  • Quantum emitter
  • Gap waveguide
  • Purcell
  • Dual waveguide
  • Density of states
  • LDoS

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