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SKM 2023 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 24: Quantum dots: Optics

HL 24.13: Vortrag

Mittwoch, 29. März 2023, 13:00–13:15, POT 151

Single photon source in a topological cavityJonathan Jurkat1, Sebastian Klembt1, Marco De Gregorio1, •Moritz Meinecke1, Quirin Buchinger1, Tristan Hader1, Johannes Beierlein1, Oleg Egorov3, Monika Emmerling1, Constantin Krause1, Christian Schneider2, Tobias Huber-Loyola1, and Sven Höfling11Technische Physik, Physikalisches Institut and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, 97074 Würzburg, Germany — 2Lehrstuhl für Physik, Universität Oldenburg, 26129 Oldenburg, Germany — 3Lehrstuhl für Kondensierte Materietheorie und Optik, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany

The introduction of topological physics into the field of photonics has led to the development of photonic devices endowed with robustness against structural and photonic disorder. While a range of platforms have been successfully implemented demonstrating topological protection of light in the classical domain, the implementation of quantum light sources in photonic devices harnessing topologically non-trivial resonances is largely unexplored. Here, we demonstrate a single photon source based on a single semiconductor quantum dot coupled to a topologically non-trivial Su-Schrieffer-Heeger (SSH) cavity mode. We provide an in-depth study of Purcell enhancement for this topological quantum light source and demonstrate its emission of non-classical light on demand. Our approach is a promising step towards the application of topological cavities in quantum photonics.

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