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We report here the novel optical properties of naturally self-assembled hybrid organic-inorganic multiple quantum wells (OI-MQWs). These hybrids consist of a stack of alternative organic and inorganic nanolayers of widths ~ 6 and 10Aring respectively. They exhibit strong room temperature narrow exciton absorption and photoluminescence features due to quantum and dielectric confinements. The exciton...
By mapping optical absorption spectra from nanostructured plasmonic crystals coated with organic molecular J-aggregate films of cyanine dyes, strong coupling between J-aggregate excitons and two types of localized and delocalized plasmons is observed.
Spatio-temporal dynamics of coherent exciton-polariton populations in semiconductor microcavities shows a rich ultrafast behaviour that presages many of the features of coherent matter condensates. For condensates at room temperature the response is necessarily ultrafast.
Summary form only given. We apply coherent control to manipulate density and spin dynamics of excitons in quantum wells. We contrive complete destruction of photoexcited exciton populations within a few hundred femtoseconds of their creation to induce ultrafast excitonic nonlinearities. This technique combines the strength of resonant with the speed of nonresonant transitions and is, therefore, promising...
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