Electrically driven quantum dot high quality factor micropillar cavities

We report on electrically driven quantum dot micropillar cavities with quality factors (Q-factors) up to 16.000. A special lateral current injection scheme into small mode volume micropillars is employed which ensures an efficient light outcoupling. The high Q-factors allow the observation of pronounced single dot resonance effects with a Purcell enhancement. These features make the novel electrically addressable cavities promising for single semiconductor quantum dot cavity quantum electrodynamics experiments.