
1.Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China
2.Sorbonne Université, CNRS, Institut des Nanosciences de Paris, UMR 7588, 75005 Paris, France
3.Centre de Nanosciences et de Nanotechnologies et de Nanostructures, CNRS UMR9001, Université Paris-Saclay, 10 boulevard Thomas Gobert, 91120 Marcoussis, France
4.Laboratoire de Physique et d'Etude des Matériaux, ESPCI-ParisTech, PSL Research University, Sorbonne Université, CNRS UMR 8213, 10 rue Vauquelin, Paris 75005, France
5.Laboratoire Charles Fabry, Institut d'Optique Graduate School, CNRS UMR 8501, Université Paris Saclay, 2 avenue Augustin Fresnel, 91127 Palaiseau Cedex, France
Agnès Maître (agnes.maitre@insp.upmc.fr)
Published:2020,
Published Online:04 March 2020,
Received:05 November 2019,
Revised:28 January 2020,
Accepted:19 February 2020
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Dhawan, A. R. et al. Extreme multiexciton emission from deterministically assembled single-emitter subwavelength plasmonic patch antennas. Light: Science & Applications, 9, 310-318 (2020).
Dhawan, A. R. et al. Extreme multiexciton emission from deterministically assembled single-emitter subwavelength plasmonic patch antennas. Light: Science & Applications, 9, 310-318 (2020). DOI: 10.1038/s41377-020-0269-0.
Coupling nano-emitters to plasmonic antennas is a key milestone for the development of nanoscale quantum light sources. One challenge
however
is the precise nanoscale positioning of the emitter in the structure. Here
we present a laser etching protocol that deterministically positions a single colloidal CdSe/CdS core/shell quantum dot emitter inside a subwavelength plasmonic patch antenna with three-dimensional nanoscale control. By exploiting the properties of metal-insulator-metal structures at the nanoscale
the fabricated single-emitter antenna exhibits a very high-Purcell factor (>72) and a brightness enhancement of a factor of 70. Due to the unprecedented quenching of Auger processes and the strong acceleration of the multiexciton emission
more than 4 photons per pulse can be emitted by a single quantum dot
thus increasing the device yield. Our technology can be applied to a wide range of photonic nanostructures and emitters
paving the way for scalable and reliable fabrication of ultracompact light sources.
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