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arXiv · 1505.00658

Epitaxial lift-off for solid-state cavity quantum electrodynamics

Lukas Greuter·Daniel Najer·Andreas V. Kuhlmann·Sascha Valentin·Arne Ludwig·Andreas D. Wieck·Sebastian Starosielec·Richard J. Warburton
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Abstract

We present a new approach to incorporate self-assembled quantum dots into a Fabry-Pérot-like microcavity. Thereby a 3$λ$/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 4,100 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 suggests that we are close to the strong coupling regime.

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Lukas Greuter, Daniel Najer, Andreas V. Kuhlmann, Sascha Valentin, Arne Ludwig, Andreas D. Wieck, Sebastian Starosielec, Richard J. Warburton. 2015-05-04. Epitaxial lift-off for solid-state cavity quantum electrodynamics. https://doi.org/10.1063/1.4928769

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