Dresden 2017 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 58: Quantum Dots: Optical Properties IV

HL 58.10: Talk

Wednesday, March 22, 2017, 17:45–18:00, POT 151

An electrically controlled single-photon source driven by an on-chip integrated quantum dot microlaser — •Pierce Munnelly¹, Tobias Heindel¹, Martin Kamp², Sven Höfling², Christian Schneider², and Stephan Reitzenstein¹ — ¹Institut für Festkörperphysik, Technische Universtität Berlin, Germany — ²Technische Physik, Universität Würzburg, Würzburg, Germany

Quantum dot micropillar cavities are of great interest with respect the realization of high-β microlaser and non-classical light sources. Beyond this, they can also act as active elements in integrated quantum optics schemes, in which they can be monolithically fabricated together with other electro-optical components to form, for instance, compact, resonantly driven single photon sources.
In the present work, we report on an electrically triggered, monolithically integrated whispering gallery mode (WGM) laser which drives a c-QED enhanced single photon source (SPS) on a chip. In our concept, lateral emission from the WGM laser excites a quantum dot in a laterally displaced (by 10 µm) micropillar cavity which acts as an efficient, vertically emitting SPS. Via an additional electrical contact applied to the displaced micropillar, we are able to eletro-optically control the SPS via the quantum-confined Stark effect. In this configuration we demonstrate fast spectral resonance tuning and triggered single photon emission of an on-chip driven quantum dot micropillar cavity.