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Epitaxial lift-off for solid-state cavity quantum electrodynamics
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
ID
3378779
Author(s)
Greuter, Lukas; Najer, Daniel; Kuhlmann, Andreas V.; Valentin, Sascha R.; Ludwig, Arne; Wieck, Andreas D.; Starosielec, Sebastian; Warburton, Richard J.
Epitaxial lift-off for solid-state cavity quantum electrodynamics
Journal
Journal of applied physics
Volume
118
Number
7
Pages / Article-Number
075705
Abstract
We demonstrate an approach to incorporate self-assembled quantum dots into a Fabry-Pérot-like microcavity. Thereby, a 3λ/4 GaAs layer containing quantum dots is epitaxially removed and attached by van der Waals bonding to one of the microcavity mirrors. We reach a finesse as high as 4100 with this configuration limited by the reflectivity of the dielectric mirrors and not by scattering at the semiconductor-mirror interface, demonstrating that the epitaxial lift-off procedure is a promising procedure for cavity quantum electrodynamics in the solid state. As a first step in this direction, we demonstrate a clear cavity-quantum dot interaction in the weak coupling regime with a Purcell factor in the order of 3. Estimations of the coupling strength via the Purcell factor suggest that we are close to the strong coupling regime.
