Erlangen 2022 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 46: Nano-Optics I
Q 46.6: Talk
Thursday, March 17, 2022, 12:00–12:15, Q-H11
Design of Novel Waveguide-coupled Diamond Nanostructures for Efficient Photonic Integration — •Julian M. Bopp1,2, Matthias Plock3, Maarten van der Hoeven1, Tommaso Pregnolato1,2, Sven Burger3,4, and Tim Schröder1,2 — 1Department of Physics, Humboldt-Universität zu Berlin, Berlin, Germany — 2Ferdinand-Braun-Institut, Berlin, Germany — 3Zuse Institute Berlin (ZIB), Berlin, Germany — 4JCMwave GmbH, Berlin, Germany
Defect centers in diamond are promising candidates for being used as quantum memories [1] and quantum emitters. Nowadays, it is still challenging to provide high coupling efficiencies between light emitted from a single defect center located in a diamond cavity and a travelling light mode of a connected waveguide [2]. Such high coupling efficiencies are required to apply the defect centers as single-photon sources in photonic integrated circuits (PICs) [3].
Here, we present our progress towards increasing the interaction strength between single tin-vacancy centers in diamond (SnV) and light fields by embedding the SnV in new types of waveguide-integrated resonators with high quality factors and small mode volumes. We investigate different design parameters of the waveguide-coupled resonator to ensure efficient adiabatic coupling and propose a way for deterministic high-yield fabrication of the developed nanostructures.
[1] S. Mouradian et al., Phys. Rev. X 5, 031009 (2015)
[2] S. Mouradian et al., Appl. Phys. Lett. 111, 021103 (2017)
[3] N. H. Wan et al., Nature 583, pp. 226-231 (2020)