Dresden 2026 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 20: Poster I
HL 20.38: Poster
Tuesday, March 10, 2026, 18:00–20:00, P1
Design and optimization of photonic nanostructures for embedding GaAs quantum dots emitting at 780 nm — •Mrunmayee Deodhar1, Ponraj Vijayan1, Katharina Dahler1, Ulrich Pfister1, Michelle Weiß1, Melina Peter2, Ailton José Garcia Jr.2, Thomas Oberleitner2, Michael Jetter1, Simone Luca Portalupi1, Armando Rastelli2, and Peter Michler1 — 1Institut für Halbleiteroptik und Funktionelle Grenzflächen (IHFG), Center for Integrated Quantum Science and Technology (IQST) and SCoPE, University of Stuttgart, Allmandring 3, Germany — 2Institute of Semiconductor and Solid State Physics, Johannes Kepler University Linz, 4040 Linz, Austria
Droplet-etched GaAs quantum dots (QDs) are a promising source for single and highly indistinguishable photons. Their optical properties like a narrow wavelength distribution, short decay times, linewidths close to the Fourier limit, and the resulting highly indistinguishable photons make them highly appealing for several quantum technologies. We demonstrate the integration of these QDs into photonic nanostructures such as single-mode waveguides, multimode interference splitters, and Bragg grating waveguides. We also present simulations and describe the fabrication process used to realize these photonic nanostructures.
Keywords: GaAs-QDs; Waveguides; Multimode Interference Splitter