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We report on the observation of bright emission of single photons underpulsed resonance fluorescence conditions from a single quantum dot (QD) in amicropillar cavity. The brightness of the QD fluorescence is greatly enhancedvia the coupling to the fundamental mode of a micropillar, allowing us todetermine a single photon extraction efficiency of $(20.7\pm0.8)~\%$ per linearpolarization basis. This yields an overall extraction efficiency of$(41.4\pm1.5)~\%$ in our device. We observe the first Rabi-oscillation in aweakly coupled quantum dot-micropillar system under coherent pulsed opticalexcitation, which enables us to deterministically populate the excited QDstate. In this configuration, we probe the single photon statistics of thedevice yielding $g^{(2)}(0)=0.072\pm0.011$ at a QD-cavity detuning of$75~\mu$eV.

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