Imbalanced initial populations between dark and bright states in semiconductor quantum dots

Sheng-Di Lin*, Ying Jhe Fu, Chun Cheng

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Scopus citations

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.

Original languageEnglish
Pages (from-to)19850-19858
Number of pages9
JournalOptics Express
Volume20
Issue number18
DOIs
StatePublished - 27 Aug 2012

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