Freiburg 2019 – wissenschaftliches Programm
FM 53.1: Invited Talk
Mittwoch, 25. September 2019, 14:00–14:30, 1010
Efficient single photon sources for quantum information science — •Tobias Huber1, Jan Donges1, Simon Betzold1, Magdalena Moczała-Dusanowska1, Łukasz Dusanowski1, Stefan Gerhardt1, Jonathan Jurkat1, Andreas Pfenning1, Christian Schneider1, and Sven Höfling1,2 — 1Lehrstuhl für Technische Physik, Universität Würzburg, Würzburg, Germany — 2SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, UK
Self-assembled semiconductor quantum dots are good sources of indistinguishable single photons and entangled photon pairs. Furthermore, the ground state spin of a trapped electron or hole can be used as a spin qubit. Due to the high refractive index of the host material, only a small fraction of light can be collected and used in further experiments. So solve this issue, quantum dots have been embedded into various kinds of photonic structures to enhance their photonic properties due to cavity quantum electrodynamics.
Here, we present our latest results in strain tunability of quantum dots when embedded in micropillar cavities as well as some preliminary data on quantum dots in circular grating cavities.