We report the fabrication of a single-mode solid-state single photon source, based on an isolated InAs quantum dot (QD) on resonance with the fundamental mode of a pillar microcavity. Photon correlation experiments under pulsed excitation reveal a clear antibunching behavior. We show that a preparation of the single photons in a given quantum state (same spatial mode, same polarization) can be obtained by placing a QD in resonance with the nondegenerate fundamental mode of an elliptical micropillar.

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