High Directional Radiation of Single Photon Emission in a Dielectric Antenna

The quasi-omnidirectional radiation pattern of a single emitter makes it hard to be fully collected by a standard optical system. In this work, we demonstrate theoretically and experimentally the use of a polymer-based dielectric antenna to generate high directional radiation of a single photon sour...

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Bibliographic Details
Published in:ACS photonics 2019-11, Vol.6 (11), p.3024-3031
Main Authors: Au, Thi Huong, Buil, Stéphanie, Quélin, Xavier, Hermier, Jean-Pierre, Lai, Ngoc Diep
Format: Article
Language:English
Subjects:
Optics
Physics
Quantum Physics
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Summary:The quasi-omnidirectional radiation pattern of a single emitter makes it hard to be fully collected by a standard optical system. In this work, we demonstrate theoretically and experimentally the use of a polymer-based dielectric antenna to generate high directional radiation of a single photon source based on a colloidal quantum dot (QD). The studies show that the position of the QD inside an optimum dielectric pillar is a crucial factor of the coupling. The modeled structure provides a high directional emission with a very low beam divergence (Θ1/2 = 9.2°). The experimental emission rate is enhanced up to 5-fold, and the single photon quality increases about 60% with a selected orientation of the QD thanks to the high directional emission of the coupled QD/photonic system.
ISSN:2330-4022
2330-4022
DOI:10.1021/acsphotonics.9b01358