Abstract
Controlling the position of individual quantum dots (QDs) by means of overgrowing a prepatterned substrate is a prospering research topic [1]. In combination with an accurate alignment procedure, single site-controlled quantum dots (SCQDs) can be precisely retrieved after overgrowth [2] and even integrated in optical resonator devices [3]. 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. Especially the device integration of SCQDs into micropillar cavities is a challenging task, as overgrowth of several microns of semiconductor material is required while the alignment accuracy in the system has to be maintained. Yet, a spatially and spectrally resonant single QD in a micropillar cavity can be regarded as a model system for the exploration of cQED effects on a semiconductor platform.
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