Light-matter interaction of a site-controlled quantum dot- micropillar cavity system

Controlling the position of individual quantum dots (QDs) by means of overgrowing a prepatterned substrate is a prospering research topic. In combination with an accurate alignment procedure, single site-controlled quantum dots (SCQDs) can be precisely retrieved after overgrowth and even integrated in optical resonator devices. This is an essential step towards the parallel fabrication of spatial resonant QD-resonator systems that can be used as efficient single photon sources or to study cavity quantum electrodynamics (cQED) effects. In this contribution, cQED-effects of SCQDs into micropillar cavities are demonstrated. In order to demonstrate cQED effects we performed temperature tuning of a single SCQD spectrally located on the high energy side of the fundamental resonator mode with a quality factor of ~1700 and a pillar diameter of 1 mum. It is concluded that the results are promising with respect to the application of site-controlled QDs in quantum light sources.