Title: Imbalanced initial populations between dark and bright states in semiconductor quantum dots
Authors: Lin, Sheng-Di
Fu, Ying-Jhe
Cheng, Chun
Department of Electronics Engineering and Institute of Electronics
Issue Date: 27-Aug-2012
Abstract: We present the observation and analysis of long-lived exciton in individual InAs quantum dots (QDs). The general model considering the interplay between dark and bright states reveals the two key factors responsible for the long decay time: the shortened spin-flip time at elevated temperature and the imbalanced initial populations between the dark and bright states. The later one plays a key role in the unusual phenomena and leads to the possibility of spin-dependent relaxation process in QDs. (C) 2012 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.20.019850
ISSN: 1094-4087
DOI: 10.1364/OE.20.019850
Volume: 20
Issue: 18
Begin Page: 19850
End Page: 19858
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