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arXiv · 2302.07538

Photon correlations in the collective emission of hybrid gold-(CdSe/CdS/CdZnS) nanocrystal supraparticles

V. Blondot·D. Gérard·G. Quibeuf·C. Arnold·A. Delteil·A. Bogicevic·T. Pons·N. Lequeux·S. Buil·J-P. Hermier
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Abstract

We investigate the photon statistics of the light emitted by single self-assembled hybrid gold-CdSe/CdS/CdZnS colloidal nanocrystal supraparticles through the detailed analysis of the intensity autocorrelation function $g^{(2)}(\tau)$. We first reveal that, despite the large number of nanocrystals involved in the supraparticle emission, antibunching can be observed. We then present a model based on non-coherent F\"orster energy transfer and Auger recombination that well captures photon antibunching. Finally, we demonstrate that some supraparticles exhibit a bunching effect at short time scales corresponding to coherent collective emission.

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V. Blondot, D. Gérard, G. Quibeuf, C. Arnold, A. Delteil, A. Bogicevic, T. Pons, N. Lequeux, S. Buil, J-P. Hermier. 2023-02-15. Photon correlations in the collective emission of hybrid gold-(CdSe/CdS/CdZnS) nanocrystal supraparticles. https://arxiv.org/abs/2302.07538

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