Localised excitation of a single photon source by a nanowaveguide

Scientific Reports
Wei GengChristophe Couteau

Abstract

Nowadays, integrated photonics is a key technology in quantum information processing (QIP) but achieving all-optical buses for quantum networks with efficient integration of single photon emitters remains a challenge. Photonic crystals and cavities are good candidates but do not tackle how to effectively address a nanoscale emitter. Using a nanowire nanowaveguide, we realise an hybrid nanodevice which locally excites a single photon source (SPS). The nanowire acts as a passive or active sub-wavelength waveguide to excite the quantum emitter. Our results show that localised excitation of a SPS is possible and is compared with free-space excitation. Our proof of principle experiment presents an absolute addressing efficiency ηa ~ 10(-4) only ~50% lower than the one using free-space optics. This important step demonstrates that sufficient guided light in a nanowaveguide made of a semiconductor nanowire is achievable to excite a single photon source. We accomplish a hybrid system offering great potentials for electrically driven SPSs and efficient single photon collection and detection, opening the way for optimum absorption/emission of nanoscale emitters. We also discuss how to improve the addressing efficiency of a dipolar nanosc...Continue Reading

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Citations

Jan 7, 2017·Applied Optics·Josslyn Beltran MadrigalSylvain Blaize
Nov 14, 2018·Reports on Progress in Physics·Fulvio FlaminiFabio Sciarrino
Oct 4, 2018·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·M ManceauA Bramati
Mar 4, 2019··Renaud BachelotMackrine Nahra
Mar 2, 2019··Christophe CouteauJean-Philippe Girard
May 21, 2018··Renaud BachelotXiaolun Xu

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Methods Mentioned

BETA
scanning electron microscopy
electron beam lithography
light scattering

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