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SKM 2021 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 14: Materials and devices for quantum technology (joint session HL/TT)

HL 14.9: Vortrag

Mittwoch, 29. September 2021, 12:30–12:45, H4

Single Photon Emission from a topological cavity — •Jonathan Jurkat1, Sebastian Klembt1, Tristan H. Harder1, Johannes Beierlein1, Monika Emmerling1, Tobias Huber1, Christian Schneider2, and Sven Höfling11Technische Physik, Wilhelm-Conrad-Röntgen-Research Center for Complex Material Systems, and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany — 2Institute of Physics, University of Oldenburg, 26129 Oldenburg, Germany

We measured the emission enhancement as well as single photon emission of a In(Ga)As quantum in spectral resonance with a topological defect mode. The emission was measured in a micro-photoluminescence setup under quasi resonant pumping with a pulsed laser. Spectral resonance was achieved by means of temperature tuning. The photonics lattice and topologically protected defect mode was implemented in an orbital Su-Schrieffer-Heeger chain. This zigzag chain of coupled micropillar devices was fabricated using molecular beam epitaxy in combination with an etch and overgrowth technique. These coupled resonators offer the exciting opportunity to combine a complex band structure formation with the emission of single localized quantum emitters.

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