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Solid-state single photon sources: the nanowire antenna

Inbal Friedler 1 Christophe Sauvan 1 Jean-Paul Hugonin 1 Philippe Lalanne 1 Julien Claudon 2 Jean-Michel Gérard 2 
1 Laboratoire Charles Fabry de l'Institut d'Optique / Naphel
LCFIO - Laboratoire Charles Fabry de l'Institut d'Optique
2 NPSC - Nanophysique et Semiconducteurs
PHELIQS - PHotonique, ELectronique et Ingénierie QuantiqueS : DRF/IRIG/PHELIQS
Abstract : We design several single-photon-sources based on the emission of a quantum dot embedded in a semiconductor (GaAs) nanowire. Through various taper designs, we engineer the nanowire ends to realize efficient metallic-dielectric mirrors and to reduce the divergence of the far-field radiation diagram. Using fully-vectorial calculations and a comprehensive Fabry-Perot model, we show that various realistic nanowire geometries may act as nanoantennas (volume of ≈0.05 λ3) that assist funnelling the emitted photons into a single monomode channel. Typically, very high extraction efficiencies above 90% are predicted for a collection optics with a numerical aperture NA=0.85. In addition, since no frequency-selective effect is used in our design, this large efficiency is achieved over a remarkably broad spectral range, 70 nm at λ=950 nm.
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Submitted on : Thursday, April 5, 2012 - 3:04:24 PM
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  • HAL Id : hal-00570600, version 1



Inbal Friedler, Christophe Sauvan, Jean-Paul Hugonin, Philippe Lalanne, Julien Claudon, et al.. Solid-state single photon sources: the nanowire antenna. Optics Express, Optical Society of America - OSA Publishing, 2009, 17 (4), pp.2095-2110. ⟨hal-00570600⟩



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