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Title

Using local fields to tailor hybrid quantum-dot/metal nanoparticle systems

AuthorsArtuso, Ryan D.; Bryant, Garnett W.; García-Etxarri, Aitzol ; Aizpurua, Javier
Issue Date2011
PublisherAmerican Physical Society
CitationPhysical Review B 83(23): 235406 (2011)
AbstractWe study hybrid-molecule structures consisting of a metal nanoparticle (MNP) nanorod coupled to a semiconductor quantum dot (SQD). MNP geometry can be used to tailor the local fields that determine the SQD-MNP coupling and to engineer the hybrid dynamical response. We identify regimes where dark modes and higher-order multipolar modes can influence hybrid response. Strong local-field coupling via dark modes changes the interference and self-interaction effects dramatically. External fields do not directly drive this MNP dark mode, so SQD-MNP coupling is dominated by the local induced self-coupling. By utilizing more complex structures that provide substantial local-field enhancement, we show the strong SQD-MNP coupling regimes can be made much more accessible. All of these aspects could enhance the capabilities of metal nanostructures to provide spatial and spectral control of the optical properties of single emitters.
Description9 páginas, 10 figuras.-- PACS number(s): 78.67.Bf, 78.67.Lt, 42.50.−p
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.83.235406
URIhttp://hdl.handle.net/10261/44056
DOI10.1103/PhysRevB.83.235406
ISSN1098-0121
E-ISSN1550-235X
Appears in Collections:(CFM) Artículos
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