Rostock 2019 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 38: Nano-Optics (Single Quantum Emitters) II

Q 38.6: Vortrag

Mittwoch, 13. März 2019, 15:15–15:30, S SR 112 Maschb.

Integration of quantum emitters with SiN photonic circuits — •Philip Schrinner and Carsten Schuck — Physikalisches Institut and Center for Nanotechnology, WWU Münster, Germany

The integration of nano-scale quantum emitters with silicon nitride (SiN) waveguides is a promising approach to realize a scalable platform for quantum photonic circuits. Recent progress in embedding quantum emitters into nanophotonic devices rely on optical excitation of individual emitters with a laser via free space objectives, which lacks of scalability and has a reduced signal-to-noise ratio when characterizing waveguide-integrated emitters. Here we investigate optical excitation of emitters via nanophotonic waveguides for quantum emitters coupled to a collector waveguide. We employ scalable deposition and fabrication techniques to locate nitrogen vacancy (NV)-centers in nanodiamonds in the vicinity of feed- and collector-waveguides, which allow for optical excitation and fluorescence collection, respectively. One of our key objectives is the minimization of pump light for the efficient optical excitation of emitters to reduce auto-fluorescence from the SiN-waveguide material, which obscures the emission from NV-centers at room temperature. Based on our results with waveguide-coupled emitters we anticipate nanophotonic devices that allow for addressing large numbers of quantum emitters via a common bus waveguide while allowing for fluorescence collection into individual waveguides that serve as the input for a nanophotonic network.