Nanoscale sculpturing of single photons with dielectrics

Lead Research Organisation: Imperial College London
Department Name: Physics

Abstract

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Publications

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Mignuzzi S (2018) Energy-Momentum Cathodoluminescence Spectroscopy of Dielectric Nanostructures in ACS Photonics

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Mignuzzi S (2019) Nanoscale Design of the Local Density of Optical States in Nano Letters

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Remesh V (2019) Coherent Multiphoton Control of Gallium Phosphide Nanodisk Resonances in ACS Photonics

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Sortino L (2019) Enhanced light-matter interaction in an atomically thin semiconductor coupled with dielectric nano-antennas in Nature Communications

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Wang J (2021) All-Dielectric Crescent Metasurface Sensor Driven by Bound States in the Continuum in Advanced Functional Materials

 
Description We have developed a method in order to strongly sculpt light fields on the sub-wavelength scale with dielectric nanoantennas. This could enable new forms of single-photon sources for quantum communications. Particular promise is the coupling of these antennas to low-dimensional materials.
As a particular promising outcome, we have demonstrated that dielectrictic nanoantennas based on gallium phosphide show significant potential to enhance light emission from two-dimensional materials, published in two articles in Nature Communications and ACS Photonics. Dielectric nanoantennas compare favourably in this regard with their plasmonic, metallic counterparts. We regard this as a key finding going forward in terms of utilizing dielectric nanoantennas as a means to develop quantum light sources based on low-dimensional photon emitters.
Exploitation Route We have obtained internal funds at Imperial for impact acceleration and are currently exploring additional funding opportunities for follow-up work.
Sectors Digital/Communication/Information Technologies (including Software)