The photonic nanowire: an emerging platform for highly efficient single-photon sources for quantum information applications

Niels Gregersen, Mathieu Munsch, Nitin S. Malik, Joël Bleuse, Emmanuel Dupuy, Adrien Delga, Jesper Mørk, Jean-Michel Gérard, Julien Claudon

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    Abstract

    Efficient coupling between a localized quantum emitter and a well defined optical channel represents a powerful route to realize single-photon sources and spin-photon interfaces. The tailored fiber-like photonic nanowire embedding a single quantum dot has recently demonstrated an appealing potential. However, the device requires a delicate, sharp needle-like taper with performance sensitive to minute geometrical details. To overcome this limitation we demonstrate the photonic trumpet, exploiting an opposite tapering strategy. The trumpet features a strongly Gaussian far-field emission. A first implementation of this strategy has lead to an ultra-bright single-photon source with a first-lens external efficiency of 0.75 ± 0.1 and a predicted coupling to a Gaussian beam of 0.61 ± 0.08.
    Original languageEnglish
    Article number87490W
    JournalProceedings of SPIE - The International Society for Optical Engineering
    Volume8749
    ISSN0277-786X
    DOIs
    Publication statusPublished - 2013
    EventSPIE Defense, Security and Sensing : Quantum Information and Computation XI - Baltimore, Maryland, United States
    Duration: 29 Apr 20133 May 2013

    Conference

    ConferenceSPIE Defense, Security and Sensing : Quantum Information and Computation XI
    Country/TerritoryUnited States
    CityBaltimore, Maryland
    Period29/04/201303/05/2013

    Keywords

    • Single-photon source
    • Photonic nanowire
    • Inverted conical taper
    • Photonic trumpet
    • Spin-photon interface
    • Efficiency
    • Gaussian beam

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