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The prospect of studying quantum optics in the solid state and the quest for quantum light sources in the field of quantum communication has triggered enormous efforts in the development of microcavity systems with embedded quantum dots (QDs) [1]. The success story in this field of modern optics includes the observation of fundamental light-matter interaction in the cavity quantum electrodynamics...
A novel concept for on-chip quantum optics using an internal electrically pumped microlaser is presented. The microlaser resonantly excites a quantum dot — microcavity system operating in the weak coupling regime of cavity quantum electrodynamics.
We report on high quality electrically driven quantum dot micropillar cavities with Q-factors up to 16.000. The high Q-factors allow the observation of pronounced single dot resonance effects with a Purcell enhancement of about 10.
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