Optics Communications 2018 DOI: 10.1016/j.optcom.2017.12.032 View full text
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Arsenty Kaganskiy, Sarah Fischbach, André Strittmatter, Sven Rodt, Tobias Heindel, Stephan Reitzenstein

Abstract: We report on the realization of scalable single-photon sources (SPSs) based on single site-controlled quantum dots (SCQDs) and deterministically fabricated microlenses. The fabrication process comprises the buried-stressor growth technique complemented with low-temperature in-situ electron-beam lithography for the integration of SCQDs into microlens structures with high yield and high alignment accuracy. The microlens-approach leads to a broadband enhancement of the photon-extraction efficiency of up to (21 ±…

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