Cavity quantum electrodynamics with charge-controlled quantum dots coupled to a fiber Fabry–Perot cavity

Abstract

We demonstrate non-perturbative coupling between a single self-assembled\nInGaAs quantum dot and an external fiber-mirror based microcavity. Our results\nextend the previous realizations of tunable microcavities while ensuring\nspatial and spectral overlap between the cavity-mode and the emitter by\nsimultaneously allowing for deterministic charge control of the quantum dots.\nUsing resonant spectroscopy, we show that the coupled quantum dot cavity system\nis at the onset of strong coupling, with a cooperativity parameter of 2. Our\nresults constitute a milestone towards the realization of a high efficiency\nsolid-state spin-photon interface.\n