Stephan Reitzenstein

TL;DR: In this paper, the authors report on high quality electrically driven quantum dot micropillar cavities with Q-factors up to 16.000, which allow the observation of pronounced single dot resonance effects with a Purcell enhancement of about 10.

TL;DR: In this paper, the effects of surface states on the transport characteristics of mesoscopic devices were investigated using a Poisson-Schrodinger solver, and it was shown that surface properties strongly affect the conductance of QPCs, and that a simple model for surface states allows us to reproduce with reasonable accuracy the pinch-off voltage of different gate layouts.

TL;DR: In this paper, the realization of integrated light sources capable of emitting non-classical multi-photon states, is a fascinating, yet equally challenging task at the heart of quantum optics.

TL;DR: In this article, the authors performed an in-depth experimental analysis of quantum dot microlasers and investigated their input-output relationship over a wide range of optical pumping conditions, finding that the current energy efficiency limitation is caused by disadvantageous optical pumping concepts and by a low exciton conversion efficiency.

TL;DR: In this paper, the authors reported the realization of micropillars with site-controlled quantum dots (SCQDs) in the active layer, where the number and position of SCQDs in the cavity can be simultaneously controlled by the design of the buried stressor.