SKM 2023 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 33: Poster II
HL 33.22: Poster
Wednesday, March 29, 2023, 17:00–19:00, P1
Towards an integrated nanophotonic and electronic spin platform in 4H-SiC — •Daniel Scheller1, Daniel Häupl2, Lin Jin3, Christian Gobert4, Jannik Schwarberg1, Jörg Schulze1, Nicolas Joly2, Wolfram Pernice3, and Roland Nagy1 — 1Chari of Electron Devices, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany — 2Max-Planck-Institue for the science of light, Erlangen, Germany — 3Responsive Nanosystems, University of Münster, Münster, Germany — 4Fraunhofer IISB, Erlangen, Germany
The solid state spin system of negatively charged silicon vacancies (VSi) V2 in 4H-SiC shows high spectral stability and excellent spin coherence times required for efficient quantum processing. Moreover, silicon carbide provides standardized semiconductor processes enabling the implementation of integrated quantum photonics. However, high-fidelity spin photon coupling and low-loss chip-to-fiber interfaces are necessary to improve experimental rates and, thus, the performance of quantum devices. Recently, high coupling efficiencies of emitted photons from the VSi color center into angle-etched SiC waveguides have been predicted which can be further enhanced by photonic crystal cavities. Further, a low-loss optical interface from on-chip diamond tapered waveguides to tapered optical fibers was shown. Our goal is to combine these properties and implement single VSi color centers into nanophotonic SiC waveguides coupled to tapered fibers for realizing the on-chip entanglement of color centers and two locally separated quantum registers.