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arXiv · 1612.08180

Optical positioning of single quantum dots in micropillar with >65% extraction efficiency for on-demand quantum light sources

Shun-Fa Liu·Yu-Ming Wei·Rong-Ling Su·Rong-Bin Su·Ben Ma·Ze-Sheng Chen·Hai-Qiao Ni·Zhi-Chuan Niu·Ying Yu·Yu-Jia Wei·Xue-hua Wang·Si-yuan Yu
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Abstract

We report optical positioning single quantum dots (QDs) in planar cavity with an average position uncertainty $<$20 nm using an optimized two-color photoluminescence imaging technique. We create single-photon sources based on these QDs in determined micropillar cavities. The brightness of the QD fluorescence is greatly enhanced on resonance with the fundamental mode of the cavity, leading to an high extraction efficiency of 68%$\pm$6% into a lens with numerical aperture of 0.65, and simultaneously exhibiting low multi-photon probability ($g^{2}(0)$=0.144$\pm$0.012) at this collection efficiency.

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Shun-Fa Liu, Yu-Ming Wei, Rong-Ling Su, Rong-Bin Su, Ben Ma, Ze-Sheng Chen, Hai-Qiao Ni, Zhi-Chuan Niu, Ying Yu, Yu-Jia Wei, Xue-hua Wang, Si-yuan Yu. 2016-12-24. Optical positioning of single quantum dots in micropillar with >65% extraction efficiency for on-demand quantum light sources. https://arxiv.org/abs/1612.08180

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