title: Widely Tunable Single-Photon Source from a Carbon Nanotube in the Purcell Regime.
abstract: The narrow emission of a single carbon nanotube at low temperature is coupled to the optical mode of a fiber microcavity using the built-in spatial and spectral matching brought by this flexible geometry. A thorough cw and time-resolved investigation of the very same emitter both in free space and in cavity shows an efficient funneling of the emission into the cavity mode together with a strong emission enhancement corresponding to a Purcell factor of up to 5. At the same time, the emitted photons retain a strong sub-Poissonian statistics. By exploiting the cavity feeding effect on the phonon wings, we locked the emission of the nanotube at the cavity resonance frequency, which allowed us to tune the frequency over a 4 THz band while keeping an almost perfect antibunching. By choosing the nanotube diameter appropriately, this study paves the way to the development of carbon-based tunable single-photon sources in the telecom bands.
authors.affiliation: Laboratoire Pierre Aigrain, École Normale Supérieure, CNRS, Université Pierre et Marie Curie, Université Paris Diderot, 24, rue Lhomond, F-75005 Paris, France.
authors.forename: A
authors.initials: A
authors.lastname: Jeantet
authors.affiliation: Laboratoire Pierre Aigrain, École Normale Supérieure, CNRS, Université Pierre et Marie Curie, Université Paris Diderot, 24, rue Lhomond, F-75005 Paris, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Chassagneux
authors.affiliation: Laboratoire Pierre Aigrain, École Normale Supérieure, CNRS, Université Pierre et Marie Curie, Université Paris Diderot, 24, rue Lhomond, F-75005 Paris, France.
authors.forename: C
authors.initials: C
authors.lastname: Raynaud
authors.affiliation: Laboratoire Pierre Aigrain, École Normale Supérieure, CNRS, Université Pierre et Marie Curie, Université Paris Diderot, 24, rue Lhomond, F-75005 Paris, France.
authors.forename: Ph
authors.initials: P
authors.lastname: Roussignol
authors.affiliation: Laboratoire Aimé Cotton, CNRS, École Normale Supérieure de Cachan, Universite Paris Sud, 91405 Orsay, France.
authors.forename: J S
authors.initials: JS
authors.lastname: Lauret
authors.affiliation: Laboratoire Kastler Brossel, École Normale Supérieure, CNRS, Université Pierre et Marie Curie, 24 rue Lhomond, F-75005 Paris, France.
authors.forename: B
authors.initials: B
authors.lastname: Besga
authors.affiliation: Laboratoire Kastler Brossel, École Normale Supérieure, CNRS, Université Pierre et Marie Curie, 24 rue Lhomond, F-75005 Paris, France.
authors.forename: J
authors.initials: J
authors.lastname: Estève
authors.affiliation: Laboratoire Kastler Brossel, École Normale Supérieure, CNRS, Université Pierre et Marie Curie, 24 rue Lhomond, F-75005 Paris, France.
authors.forename: J
authors.initials: J
authors.lastname: Reichel
authors.affiliation: Laboratoire Pierre Aigrain, École Normale Supérieure, CNRS, Université Pierre et Marie Curie, Université Paris Diderot, 24, rue Lhomond, F-75005 Paris, France.
authors.forename: C
authors.initials: C
authors.lastname: Voisin