title: Modal Coupling of Single Photon Emitters Within Nanofiber Waveguides.
abstract: Nanoscale generation of individual photons in confined geometries is an exciting research field aiming at exploiting localized electromagnetic fields for light manipulation. One of the outstanding challenges of photonic systems combining emitters with nanostructured media is the selective channelling of photons emitted by embedded sources into specific optical modes and their transport at distant locations in integrated systems. Here, we show that soft-matter nanofibers, electrospun with embedded emitters, combine subwavelength field localization and large broadband near-field coupling with low propagation losses. By momentum spectroscopy, we quantify the modal coupling efficiency identifying the regime of single-mode coupling. These nanofibers do not rely on resonant interactions, making them ideal for room-temperature operation, and offer a scalable platform for future quantum information technology.
authors.affiliation: Department of Physics, King's College London , Strand, London WC2R 2LS, United Kingdom.
authors.forename: Michele
authors.initials: M
authors.lastname: Gaio
authors.affiliation: CNR-Istituto Nanoscienze, Euromediterranean Center for Nanomaterial Modelling and Technology (ECMT) , via Arnesano, I-73100 Lecce, Italy.
authors.forename: Maria
authors.initials: M
authors.lastname: Moffa
authors.affiliation: Department of Physics, King's College London , Strand, London WC2R 2LS, United Kingdom.
authors.forename: Marta
authors.initials: M
authors.lastname: Castro-Lopez
authors.affiliation: CNR-Istituto Nanoscienze, Euromediterranean Center for Nanomaterial Modelling and Technology (ECMT) , via Arnesano, I-73100 Lecce, Italy.|Dipartimento di Matematica e Fisica "Ennio De Giorgi", Università del Salento , via Arnesano I-73100 Lecce, Italy.
authors.forename: Dario
authors.initials: D
authors.lastname: Pisignano
authors.affiliation: CNR-Istituto Nanoscienze, Euromediterranean Center for Nanomaterial Modelling and Technology (ECMT) , via Arnesano, I-73100 Lecce, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Camposeo
authors.affiliation: Department of Physics, King's College London , Strand, London WC2R 2LS, United Kingdom.
authors.forename: Riccardo
authors.initials: R
authors.lastname: Sapienza
keywords: all-dielectric waveguide; colloidal quantum dots; momentum spectroscopy; nanofiber; nanophotonics; single photon