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Radiative cascades in charged quantum dots

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 نشر من قبل Eilon Poem
 تاريخ النشر 2009
  مجال البحث فيزياء
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We measured, for the first time, two photon radiative cascades due to sequential recombination of quantum dot confined electron hole pairs in the presence of an additional spectator charge carrier. We identified direct, all optical cascades involving spin blockaded intermediate states, and indirect cascades, in which non radiative relaxation precedes the second recombination. Our measurements provide also spin dephasing rates of confined carriers.



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