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An ensemble-based method to assess the quality of a sample of nanocrystals as single photon emitters (Articolo in rivista)

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An ensemble-based method to assess the quality of a sample of nanocrystals as single photon emitters (Articolo in rivista) (literal)

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Vezzoli S. [ 1,2 ] ; Shojaii S. [ 1 ] ; Cialdi S. [ 1,3 ] ; Cipriani D. [ 1 ] ; Castelli F. [ 1,3 ] ; Paris M. G. A. [ 1,4 ] ; Carbone L. [ 5 ] ; Cozzoli P. D. [ 6 ] ; Giacobino E. [ 2 ] ; Bramati A. [ 2 ] (2013)
An ensemble-based method to assess the quality of a sample of nanocrystals as single photon emitters
in Optics communications (Print); ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, AMSTERDAM (Paesi Bassi)
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Vezzoli S. [ 1,2 ] ; Shojaii S. [ 1 ] ; Cialdi S. [ 1,3 ] ; Cipriani D. [ 1 ] ; Castelli F. [ 1,3 ] ; Paris M. G. A. [ 1,4 ] ; Carbone L. [ 5 ] ; Cozzoli P. D. [ 6 ] ; Giacobino E. [ 2 ] ; Bramati A. [ 2 ] (literal)

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[ 1 ] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy [ 2 ] Univ Paris 06, Lab Kastler Brossel, CNRS UMR8552, Ecole Normale Super, F-75252 Paris 05, France [ 3 ] INFN, Sez Milano, I-20133 Milan, Italy [ 4 ] Udr Milano, CNISM, I-20133 Milan, Italy [ 5 ] Ist Nanosci CNR, Natl Nanotechnol Lab, I-73100 Lecce, Italy [ 6 ] Univ Salento, Dipartimento Matemat Fis E De Giorgi, I-73100 Lecce, Italy (literal)

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

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. (literal)

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