title: Localised excitation of a single photon source by a nanowaveguide.
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 nanoscale emitter with our system.
authors.affiliation: Laboratory of Nanotechnology, Instrumentation and Optics (LNIO), Charles Delaunay Institute, CNRS UMR 6281, University of Technology of Troyes (UTT), 10000, Troyes, France.
authors.forename: Wei
authors.initials: W
authors.lastname: Geng
authors.affiliation: Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 place Jussieu Case 74, F-75005 Paris, France.
authors.forename: Mathieu
authors.initials: M
authors.lastname: Manceau
authors.affiliation: Laboratory of Nanotechnology, Instrumentation and Optics (LNIO), Charles Delaunay Institute, CNRS UMR 6281, University of Technology of Troyes (UTT), 10000, Troyes, France.
authors.forename: Nancy
authors.initials: N
authors.lastname: Rahbany
authors.affiliation: Groupe d'étude de la matière condensée (GEMAC), CNRS, University of Versailles St Quentin, 78035 Versailles Cedex, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Sallet
authors.affiliation: Istituto Italiano di Tecnologia (IIT), Center for Bio-Molecular Nanotechnologies Via Barsanti sn, 73010 Arnesano (Lecce), Italy.|National Nanotechnology Laboratory (NNL), CNR Istituto Nanoscienze, Via per Arnesano km 5, 73100 Lecce, Italy.
authors.forename: Massimo
authors.initials: M
authors.lastname: De Vittorio
authors.affiliation: National Nanotechnology Laboratory (NNL), CNR Istituto Nanoscienze, Via per Arnesano km 5, 73100 Lecce, Italy.
authors.forename: Luigi
authors.initials: L
authors.lastname: Carbone
authors.affiliation: Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 place Jussieu Case 74, F-75005 Paris, France.
authors.forename: Quentin
authors.initials: Q
authors.lastname: Glorieux
authors.affiliation: Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 place Jussieu Case 74, F-75005 Paris, France.
authors.forename: Alberto
authors.initials: A
authors.lastname: Bramati
authors.affiliation: Laboratory of Nanotechnology, Instrumentation and Optics (LNIO), Charles Delaunay Institute, CNRS UMR 6281, University of Technology of Troyes (UTT), 10000, Troyes, France.|CINTRA CNRS-Thales-NTU UMI 3288, and School of Electrical and Electronic Engineering, Nanyang Technological University, 637553 Singapore.
authors.forename: Christophe
authors.initials: C
authors.lastname: Couteau
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