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Interplay between Strong Coupling and Radiative Damping of Excitons and Surface Plasmon Polaritons in Hybrid Nanostructures

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Title Interplay between Strong Coupling and Radiative Damping of Excitons and Surface Plasmon Polaritons in Hybrid Nanostructures
 
Creator WANG, W
VASA, P
POMRAENKE, R
VOGELGESANG, R
DE SIO, A
SOMMER, E
MAIURI, M
MANZONI, C
CERULLO, G
LIENAU, C
 
Subject exciton-plasmon coupling
molecular aggregates
metallic nanostructures
sub- and superradiance
spectral interferometry
ultrafast coherent spectroscopy
SEMICONDUCTOR MICROCAVITIES
SPONTANEOUS EMISSION
RABI OSCILLATIONS
QUANTUM
CAVITY
PHOTOLUMINESCENCE
EXCITATION
SCATTERING
MOLECULES
SHIFTS
 
Description We report on the interplay between strong coupling and radiative damping of strongly coupled excitons (Xs) and surface plasmon polaritons (SPPs) in a hybrid system made of J-aggregates and metal nanostructures. The optical response of the system is probed at the field level by angle-resolved spectral interferometry. We show that two different energy transfer channels coexist: coherent resonant dipole-dipole interaction and an incoherent exchange due to the spontaneous emissions of a photon by one emitter and its subsequent reabsorption by another. The interplay between both pathways results in a pronounced modification of the radiative damping due to the formation of super- and subradiant polariton states. This is confirmed by probing the ultrafast nonlinear response of the polariton system and explained within a coupled oscillator model. Such a strong modification of the radiative damping opens up interesting directions in coherent active plasmonics.
 
Publisher AMER CHEMICAL SOC
 
Date 2014-12-28T18:06:32Z
2014-12-28T18:06:32Z
2014
 
Type Article
 
Identifier ACS NANO, 8(1)1056-1064
1936-0851
1936-086X
http://dx.doi.org/10.1021/nn405981k
http://dspace.library.iitb.ac.in/jspui/handle/100/17065
 
Language English