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. 2020 Mar 4;9:33. doi: 10.1038/s41377-020-0269-0

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — a Fluorescence decay of the QD before (blue line) and after (red line) it is placed inside the antenna. The instrument response function is shown in black. b Normalized photon coincidences measured for the QD before insertion in the antenna and c inside the antenna under a pulsed excitation of 0.03 W/cm² at 405 nm. d QD energy-level diagram showing the biexciton (BX), exciton (X), and ground states. e Detected photon rate (red) and the corresponding photon emission rate after the detection efficiency correction (green). The blue line denotes the pulsed laser repetition rate