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

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Abstract

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.

Autore Pugliese

Tutti gli autori

  • Vezzoli S. ; Shojaii S.; Cialdi S. ; Cipriani D.; Castelli F.; Paris M. G. A. ; Carbone L. ; Cozzoli P. D.; Giacobino E.; Bramati A.

Titolo volume/Rivista

Optics communications

Anno di pubblicazione

2013

ISSN

0030-4018

ISBN

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