Berlin 2018 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 46: Quantum dots and wires: Optical properties III
HL 46.10: Vortrag
Donnerstag, 15. März 2018, 17:30–17:45, A 151
Deterministic implementation of a bright, on-demand single-photon source with near-unity indistinguishability via quantum dot imaging — •Stefan Gerhardt1, Yu-Ming He2, Jin Liu3,4,5, Sebastian Maier1, Monika Emmerling1, Marcelo Davanço3, Kartik Srinivasan3, Christian Schneider1, and Sven Höfling1,2,6 — 1Technische Physik, Physikalisches Institut and Wilhelm Conrad Röntgen-Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, 97074 Würzburg — 2University of Science and Technology of China, Hefei, Anhui 230026, China — 3Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA — 4Maryland NanoCenter, University of Maryland, College Park, Maryland 20742, USA — 5School of Physics, Sun-Yat Sen University, Guangzhou 510275, China — 6SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom
We report on the observation of bright emission of single photons generated via pulsed, resonance fluorescence conditions from a quantum dot deterministically centered in a micropillar cavity device via nanoscale quantum dot imaging. The brightness of the QD fluorescence is greatly enhanced on resonance with the fundamental mode of the pillar, leading to an extraction efficiency of ν = (49 ± 4) % for a single photon emission as pure as g(2)(0) = 0.015 ± 0.009 with a two-photon wave packet overlap up to ν = (94 ± 3) %.