The second order photon correlation g^(2)(tau) of a chaotic optical-feedback semiconductor laser is precisely measured using a Hanbury Brown-Twiss interferometer. The accurate g^(2)(tau) with non-zero delay time is obtained experimentally from the photon pair time interval distribution through a ninth-order self-convolution correction. The experimental results agree well with the theoretical analysis. The relative error of g^(2)(tau) is no more than 0.005 within 50 ns delay time. The bunching effect and coherence time of the chaotic laser are measured via the precise photon correlation technique. This technique provides a new tool to improve the accuracy of g^(2)(tau) measurement and boost applications of quantum statistics and correlation.
@article{arxiv.1911.09258,
title = {Precise Photon Correlation Measurement of a Chaotic Laser},
author = {Xiaomin Guo and Chen Cheng and Tong Liu and Xin Fang and Yanqiang Guo},
journal= {arXiv preprint arXiv:1911.09258},
year = {2019}
}