Multiphoton nonclassical light from clusters of single-photon emitters
Luo Qi, Mathieu Manceau, Andrea Cavanna, Fabian Gumpert, Luigi, Carbone, Massimo de Vittorio, Alberto Bramati, Elisabeth Giacobino, Lukas, Lachman, Radim Filip, Maria V. Chekhova
TL;DR
This paper investigates the nonclassical properties of multiphoton light emitted by clusters of single-photon emitters, demonstrating experimentally that larger clusters exhibit stronger nonclassical behavior.
Contribution
It provides experimental evidence of enhanced nonclassicality in multiphoton emission from clusters of colloidal quantum dots, expanding understanding of multiphoton quantum light sources.
Findings
Nonclassical behavior observed in clusters of 2 to 14 emitters.
Nonclassicality increases with cluster size.
Violation of correlation inequalities confirmed nonclassicality.
Abstract
We study nonclassical features of multiphoton light emitted by clusters of single-photon emitters. As signatures of nonclassicality, we use violation of inequalities for normalized correlation functions of different orders or the probabilities of multiphoton detection. In experiment, for clusters of 2 to 14 colloidal CdSe/CdS dot-in-rods we observe nonclassical behavior, which gets even more pronounced for larger clusters.
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