A deterministic quantum dot micropillar single photon source with >65% extraction efficiency based on fluorescence imaging method

We report optical positioning of single quantum dots (QDs) in planar distributed Bragg reflector (DBR) cavity with an average position uncertainty of ≈20 nm using an optimized photoluminescence imaging method. We create single-photon sources based on these QDs in determined micropillar cavities. The...

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Detalles Bibliográficos
Autores principales: Liu, Shunfa, Wei, Yuming, Su, Rongling, Su, Rongbin, Ma, Ben, Chen, Zesheng, Ni, Haiqiao, Niu, Zhichuan, Yu, Ying, Wei, Yujia, Wang, Xuehua, Yu, Siyuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5656632/
https://www.ncbi.nlm.nih.gov/pubmed/29070846
http://dx.doi.org/10.1038/s41598-017-13433-w
Descripción
Sumario:We report optical positioning of single quantum dots (QDs) in planar distributed Bragg reflector (DBR) cavity with an average position uncertainty of ≈20 nm using an optimized photoluminescence imaging method. 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% ± 6% into a lens with numerical aperture of 0.65, and simultaneously exhibiting low multi-photon probability (g((2))(0) = 0.144 ± 0.012) at this collection efficiency.

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