Simple and practical method of characterizing the parametric down-conversion source
Wang Dong1, 2, †, Wu Juan1, 2, †, Zhao Liang-Yuan1, 2, An Xue-Bi1, 2, Yin Zhen-Qiang1, 2, ‡, Chen Wei1, 2, ‡, Han Zheng-Fu1, 2, ‡, Wang Qin3, ‡
       

(a) The measured single count rate of D1, total coincidences between D1, D2 and D1, D3 for different pump power. (b) Side peak coincidences between D1, D2 and D1, D3 for different pump power.