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arXiv 2609.28139quant-phcond-mat.mes-hall

超越反聚束:光子关联分析揭示闪烁起源

Beyond Antibunching: Photon Correlation Analysis Reveals Blinking Origin

Patricia Kallert, Santiago Bermúdez-Feijóo, Giorgio De Pascalis, Nicolas Claro-Rodriguez, Ioannis Caltzidis, Normen Auler, Eva Berger, Rebecca Aschwanden, Tobia… 展开作者

Patricia Kallert, Santiago Bermúdez-Feijóo, Giorgio De Pascalis, Nicolas Claro-Rodriguez, Ioannis Caltzidis, Normen Auler, Eva Berger, Rebecca Aschwanden, Tobias Krieger, Saimon. F. Covre da Silva, Sandra Stroj, Quirin Buchinger, Michele B. Rota, Thomas Hummel, Sven Höfling, Armando Rastelli, Rinaldo Trotta, Dirk Reuter, Sonja Barkhofen, Klaus D. Jöns, Tobias Huber-Loyola

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中文总结 AI 辅助

本研究通过对比五种$g^{(2)}(0)$估计方法,发现使用正确闪烁模型拟合包络最优,而泊松归一化最差,并验证了预测模型可识别量子点的闪烁机制。

中文摘要 AI 辅助

在光子量子技术的单光子源竞争中,多种量子发射体相互竞争。因此,只有采用一致的方法分析二阶自相关函数,才能比较不同光源的多光子贡献($g^{(2)}(0)$)。然而,对于闪烁光源,学界采用了不同且不一致的方法,导致光源质量的基准无法比较。在此,我们利用一个本质上不闪烁的量子点(QD)的发射,并通过两种不同机制施加人工闪烁:在后处理中掩蔽记录的原始数据,以及通过门控激光激发脉冲来模拟闪烁系统。然后,我们将$g^{(2)}(0)$值与不闪烁的结果进行比较。在分析中,我们考察了文献中实际使用的五种$g^{(2)}(0)$估计量。虽然使用正确的闪烁模型拟合长时间尺度上的相关性包络是最佳选择,但归一化到泊松水平则给出了迄今为止最差的接近度。此外,我们测试了我们的预测模型,以识别圆形布拉格光栅腔中量子点的潜在闪烁机制。

英文摘要

A variety of quantum emitters compete in the quest for the best single-photon source for photonic quantum technologies. Consequently, only a consistent approach to analyze the second-order auto correlation function allows comparison of the multi-photon contribution ($g^{(2)}(0)$) of different sources. However, the community employs different and inconsistent methods for blinking sources, leading to incomparable benchmarks of source quality. Here, we use the emission of an inherently non-blinking quantum dot (QD) and apply artificial blinking through two different mechanisms: masking the recorded raw data in post-processing and emulation of a blinking system by gating the laser excitation pulses. We then compare the $g^{(2)}(0)$ values with the non-blinking result. For the analysis, we investigate five estimators of $g^{(2)}(0)$ actively used in the literature. While fitting the envelope of the correlations on long-time scales with the correct blinking model is the best choice, normalizing to the Poisson level gives by far the worst proximity. Furthermore, we test our predictive model to identify the underlying blinking mechanism of a QD in a circular Bragg grating cavity.

发表机构

  • Paderborn University(帕德博恩大学)

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