Images of semiconductor `dot in rods' and their small clusters are studied by measuring the second-order correlation function with a spatially resolving ICCD camera. This measurement allows one to distinguish between a single dot and a cluster and, to a certain extent, to estimate the number of dots in a cluster. A more advanced measurement is proposed, based on higher-order correlations, enabling more accurate determination of the number of dots in a small cluster. Nonclassical features of the light emitted by such a cluster are analyzed.
@article{arxiv.1312.5217,
title = {Photon correlations for colloidal nanocrystals and their clusters},
author = {O. A. Shcherbina and G. A. Shcherbina and M. Manceau and S. Vezzoli and L. Carbone and M. De Vittorio and A. Bramati and E. Giacobino and M. V. Chekhova and G. Leuchs},
journal= {arXiv preprint arXiv:1312.5217},
year = {2014}
}