Li Bai-Hong, Wang Dou-Dou, Pang Hua-Feng, Zhang Tao, Xie You, Gao Feng, Dong Rui-Fang, Li Yong-Fang, Zhang Shou-Gang. Compression of correlation time of chirped biphotons by binary phase modulationJ. Acta Physica Sinica, 2017, 66(4): 044206. DOI: 10.7498/aps.66.044206