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              This thesis presents the realization of an efficient single-photon source based on an InAs quantum dot integrated in a photonic nanowire. A photonic nanowire is a monomode waveguide made of a high refractive index material (GaAs in our case). For an optimal wire diameter around 200 nm, nearly all the spontaneous emission of the embedded single-photon emitter (free space wavelength 950 nm) is funnelled into the fundamental guided mode. In addition, the outcoupling efficiency of the guided photon to a microscope objective can be brought close to one with a proper engineering of the wire ends. The source thus features an integrated bottom mirror and a smooth tapering of the wire upper end. High performances are maintained over a broad wavelength range, a key asset of this 1D photonic structure. This thesis presents the physics which governs these structures, their realization, and their characterization. Under pulsed optical pumping, we demonstrate a single-photon source with a record efficiency of 0.72, combined with highly pure single-photon emission. We also discuss the possibility to obtain polarization control, using wire with an elliptical section.
            """ ;
    dct:identifier "NNT: 2011GRENY069" ;
    dct:issued "2026-05-23T17:55:22.693511"^^xsd:dateTime ;
    dct:language "fr" ;
    dct:modified "2026-05-23T17:55:22.693519"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Photonic nanowires : a new geometry to realize bright sources of quantum light" ;
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    dcat:keyword "boites-quantiques",
        "fils-photoniques",
        "iii-v-semiconductors",
        "infoeu-reposemanticsdoctoralthesis",
        "lumiere-quantique",
        "nanophotonics",
        "nanophotonique",
        "photonic-nanowires",
        "physphysphysics-physicsphysics-physics",
        "quantum-dot",
        "quantum-light",
        "semiconducteurs-iii-v",
        "theses" ;
    dcat:landingPage <https://theses.hal.science/tel-00681846> .

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    dct:issued "2026-05-23T17:55:22.705152"^^xsd:dateTime ;
    dct:modified "2026-05-23T17:55:22.633610"^^xsd:dateTime ;
    dct:title "Photonic nanowires : a new geometry to realize bright sources of quantum light" ;
    dcat:accessURL <https://theses.hal.science/tel-00681846> .

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