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Paris NanoSciences Institute |  |
Journal articles
Extreme multiexciton emission from deterministically assembled single-emitter subwavelength plasmonic patch antennas
Abstract : 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 ultra-compact light sources.
Keywords :
Nanophotonics and plasmonics
Quantum dots
Cited literature [57 references]
https://hal.sorbonne-universite.fr/hal-02557243
Contributor : Gestionnaire Hal-Su <>
Submitted on : Tuesday, April 28, 2020 - 3:52:48 PM
Last modification on : Sunday, December 13, 2020 - 8:22:02 AM
Contributor : Gestionnaire Hal-Su <>
Submitted on : Tuesday, April 28, 2020 - 3:52:48 PM
Last modification on : Sunday, December 13, 2020 - 8:22:02 AM
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s41377-020-0269-0.pdf
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