Direct experimental observation of nonclassicality in ensembles of single photon emitters

Abstract

In this work we experimentally demonstrate for the first time a recently proposed criterion adressed to detect nonclassical behavior in the fluorescence emission of ensembles of single-photon emitters. In particular, we apply the method to study clusters of NV centres in diamond observed via single-photon-sensitive confocal microscopy. Theoretical considerations on the behavior of the parameter at any arbitrary order in presence of poissonian noise are presented and, finally, the opportunity of detecting manifold coincidences is discussed.

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• Measuring higher-order photon correlations of faint quantum light: a short review
• Quantum non-Gaussianity criteria based on vacuum probabilities of original and attenuated state
• Mode structure reconstruction by detected and undetected light
• Optical signatures of Mott-superfluid transition in nitrogen-vacancy centers coupled to photonic crystal cavities
• Nonclassical photocounting statistics with a single on-off detector