An ensemble-based method to assess the quality of a sample of nanocrystals as single photon emitters

Colloidal semiconductor nanocrystals are among the best candidates for realizing a nano-structured single photon source at room temperature. In this paper we present a new and efficient optical method to assess the quality of a sample of nanocrystals as single-photon emitters, by an ensemble measure...

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Bibliographic Details
Published inOptics communications Vol. 300; pp. 215 - 219
Main Authors Vezzoli, Stefano, Shojaii, Seyedruhollah, Cialdi, Simone, Cipriani, Daniele, Castelli, Fabrizio, Paris, Matteo G.A., Carbone, Luigi, Davide Cozzoli, P., Giacobino, Elisabeth, Bramati, Alberto
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.07.2013
Subjects
Nanomaterials
Photo-luminescence
Quantum dot devices
Quantum dot devices
Nanomaterials
Photo-luminescence
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Summary:Colloidal semiconductor nanocrystals are among the best candidates for realizing a nano-structured single photon source at room temperature. In this paper we present a new and efficient optical method to assess the quality of a sample of nanocrystals as single-photon emitters, by an ensemble measurement of photoluminescence. We relate the ensemble photoluminescence measurements to the photon statistics of single emitters by a simple theoretical model. As an example we compare two different kinds of CdSe/CdS dot-in-rods, showing a similar degree of single photon emission when observed on a selection of single nanocrystals. The results are compared with anti-bunching measurements realized on single nanocrystals of the two kinds.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2013.03.020