Mainz 2026 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 66: Poster – Quantum Technologies III
Q 66.25: Poster
Donnerstag, 5. März 2026, 17:00–19:00, Philo 2. OG
Hybrid platform for cavity enhanced SnV centres for quantum applications — •Victoria Voinkova1, Georgii Grechko1, Jonathan Enßlin1, Roman Kolesov1, Vadim Vorobyev1, and Jörg Wrachtrup1,2 — 13. Physics Institute, University of Stuttgart, Germany — 2Max Plank Institute of Solid State Research, Stuttgart, Germany
The tin-vacancy colour centre in diamond (SnV) has emerged as a highly promising constituent for next-generation quantum networks owing to its outstanding optical and spin characteristics. High rates of coherent emission are pivotal for obtaining big cyclicity and realising the effective communication protocols. Coupling emitters to the resonance structures is a compelling mechanism for light-matter interaction enhancement, efficiency of which is proven by numerous recent research, illustrated with (but not limited to) nanobeam and 2D photonic crystal cavities, open microcavities and ring resonators. However, maturing of this technology is hindered by fabrication methods, scalability and robustness of which is still being a challenging topic. Here we propose the scalable method of fabrication of the diamond photonic devices, scalability of which stems from the hybrid integration with electrooptically tunable platform of Thin Film Lithium Niobate. The proposed method combines the SnV - friendly manufacturing flow, wide variety of tuning options and perspectives for further photonic device interconnection on one chip. This would be an important step towards creating diamond colour centre based quantum network infrastructure.
Keywords: Diamond colour centres; Photonic nanofabrication; Quantum network