학술논문
Optically driving the radiative Auger transition.
Document Type
Academic Journal
Author
Spinnler C; Department of Physics, University of Basel, Klingelbergstrasse 82, 4056, Basel, Switzerland.; Zhai L; Department of Physics, University of Basel, Klingelbergstrasse 82, 4056, Basel, Switzerland.; Nguyen GN; Department of Physics, University of Basel, Klingelbergstrasse 82, 4056, Basel, Switzerland.; Ritzmann J; Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum, 44780, Bochum, Germany.; Wieck AD; Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum, 44780, Bochum, Germany.; Ludwig A; Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum, 44780, Bochum, Germany.; Javadi A; Department of Physics, University of Basel, Klingelbergstrasse 82, 4056, Basel, Switzerland.; Reiter DE; Institut für Festkörpertheorie, Universität Münster, 48149, Münster, Germany.; Machnikowski P; Department of Theoretical Physics, Wrocław University of Science and Technology, 50-370, Wrocław, Poland.; Warburton RJ; Department of Physics, University of Basel, Klingelbergstrasse 82, 4056, Basel, Switzerland.; Löbl MC; Department of Physics, University of Basel, Klingelbergstrasse 82, 4056, Basel, Switzerland. matthias.loebl@unibas.ch.
Source
Publisher: Nature Pub. Group Country of Publication: England NLM ID: 101528555 Publication Model: Electronic Cited Medium: Internet ISSN: 2041-1723 (Electronic) Linking ISSN: 20411723 NLM ISO Abbreviation: Nat Commun Subsets: PubMed not MEDLINE; MEDLINE
Subject
Language
English
Abstract
In a radiative Auger process, optical decay leaves other carriers in excited states, resulting in weak red-shifted satellite peaks in the emission spectrum. The appearance of radiative Auger in the emission directly leads to the question if the process can be inverted: simultaneous photon absorption and electronic demotion. However, excitation of the radiative Auger transition has not been shown, neither on atoms nor on solid-state quantum emitters. Here, we demonstrate the optical driving of the radiative Auger transition, linking few-body Coulomb interactions and quantum optics. We perform our experiments on a trion in a semiconductor quantum dot, where the radiative Auger and the fundamental transition form a Λ-system. On driving both transitions simultaneously, we observe a reduction of the fluorescence signal by up to 70%. Our results suggest the possibility of turning resonance fluorescence on and off using radiative Auger as well as THz spectroscopy with optics close to the visible regime.
(© 2021. The Author(s).)
(© 2021. The Author(s).)