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Real-time observation of ultrafast Rabi oscillations between excitons and plasmons in metal nanostructures with J-aggregates

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Title Real-time observation of ultrafast Rabi oscillations between excitons and plasmons in metal nanostructures with J-aggregates
 
Creator VASA, P
WANG, W
POMRAENKE, R
LAMMERS, M
MAIURI, M
MANZONI, C
CERULLO, G
LIENAU, C
 
Subject SINGLE QUANTUM-DOT
MICROCAVITY
OPTICS
 
Description Surface plasmon polaritons (SPPs), optical excitations at the interface between a metal and a dielectric, carry significant potential for guiding and manipulating light on the nanoscale(1-3). However, their weak optical nonlinearities hinder active device fabrication, for example, for all-optical switching(4-7) or information processing(8,9). Recently, strong optical dipole coupling has been demonstrated between SPPs and nonlinear quantum emitters with normal mode splittings of up to 700 meV (refs 10-15). The predicted ultrafast energy transfer between quantum emitters and SPP fields could be a crucial microscopic mechanism for switching light by light on the nanoscale. Here, we present the first real-time observation of ultrafast Rabi oscillations in a J-aggregate/metal nanostructure, indicating coherent energy transfer between excitonic quantum emitters and SPP fields. We demonstrate coherent manipulation of the coupling energy by controlling the exciton density on a 10 fs timescale, which represents a step towards coherent, all-optical ultrafast plasmonic circuits and devices.
 
Publisher NATURE PUBLISHING GROUP
 
Date 2014-10-14T13:10:03Z
2014-10-14T13:10:03Z
2013
 
Type Article
 
Identifier NATURE PHOTONICS, 7(2)128-132
http://dx.doi.org/10.1038/NPHOTON.2012.340
http://dspace.library.iitb.ac.in/jspui/handle/100/14485
 
Language en