Deterministic generation of bright single resonance fluorescence photons from a Purcell-enhanced quantum dot-micropillar system

Optics Express
S UnsleberS Höfling

Abstract

We report on the observation of bright emission of single photons under pulsed resonance fluorescence conditions from a single quantum dot (QD) in a micropillar cavity. The brightness of the QD fluorescence is greatly enhanced via the coupling to the fundamental mode of a micropillar, allowing us to determine a single photon extraction efficiency of (20.7 ± 0.8) % per linear polarization basis. This yields an overall extraction efficiency of (41.4 ± 1.5) % in our device. We observe the first Rabi-oscillation in a weakly coupled quantum dot-micropillar system under coherent pulsed optical excitation, which enables us to deterministically populate the excited QD state. In this configuration, we probe the single photon statistics of the device yielding g<sup>(2)</sup>(0) = 0.072 ± 0.011 at a QD-cavity detuning of 75 μeV.

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