杂化金-（CdSe/CdS/CdZnS）超粒子集体发射中的光子关联
Photon correlations in the collective emission of hybrid gold-(CdSe/CdS/CdZnS) nanocrystal supraparticles
摘要：
通过对强度自相关函数$g^{(2)}(τ)$的详细分析，研究了单个自组装杂化金-CdSe/CdS/CdZnS胶体超微粒发光的光子统计特性.我们首先揭示，尽管大量的纳米晶体参与超粒子发射，可以观察到反聚束。然后，我们提出了一个模型的基础上非相干Förster能量转移和俄歇复合，以及捕获光子反聚束。最后，我们证明了一些超粒子在短时间尺度下表现出与相干集体发射相对应的聚束效应。
英文摘要：
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 $g^{(2)}(τ)$. 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 Förster 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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