title: Non-Radiative Energy Transfer Mediated by Hybrid Light-Matter States.
abstract: We present direct evidence of enhanced non-radiative energy transfer between two J-aggregated cyanine dyes strongly coupled to the vacuum field of a cavity. Excitation spectroscopy and femtosecond pump-probe measurements show that the energy transfer is highly efficient when both the donor and acceptor form light-matter hybrid states with the vacuum field. The rate of energy transfer is increased by a factor of seven under those conditions as compared to the normal situation outside the cavity, with a corresponding effect on the energy transfer efficiency. The delocalized hybrid states connect the donor and acceptor molecules and clearly play the role of a bridge to enhance the rate of energy transfer. This finding has fundamental implications for coherent energy transport and light-energy harvesting.
authors.affiliation: ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, Strasbourg, 67000, France.
authors.forename: Xiaolan
authors.initials: X
authors.lastname: Zhong
authors.affiliation: ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, Strasbourg, 67000, France.
authors.forename: Thibault
authors.initials: T
authors.lastname: Chervy
authors.affiliation: ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, Strasbourg, 67000, France.
authors.forename: Shaojun
authors.initials: S
authors.lastname: Wang
authors.affiliation: ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, Strasbourg, 67000, France.
authors.forename: Jino
authors.initials: J
authors.lastname: George
authors.affiliation: ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, Strasbourg, 67000, France.
authors.forename: Anoop
authors.initials: A
authors.lastname: Thomas
authors.affiliation: ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, Strasbourg, 67000, France.
authors.forename: James A
authors.initials: JA
authors.lastname: Hutchison
authors.affiliation: ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, Strasbourg, 67000, France.
authors.forename: Eloise
authors.initials: E
authors.lastname: Devaux
authors.affiliation: ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, Strasbourg, 67000, France.
authors.forename: Cyriaque
authors.initials: C
authors.lastname: Genet
authors.affiliation: ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, Strasbourg, 67000, France. ebbesen@unistra.fr.
authors.forename: Thomas W
authors.initials: TW
authors.lastname: Ebbesen
keywords: J-aggregate cyanine dye; delocalized state; hybrid polariton; non-radiative energy transfer; strong coupling