Hong–Ou–Mandel interference with two independent weak coherent states
Chen Hua†, , An Xue-Bi†, , Wu Juan, Yin Zhen-Qiang‡, , Wang Shuang, Chen Wei, Han Zhen-Fu
       

The HOM interference visibilities of dip versus the average photon number (|α|2 = |β|2). We still set η1 = η2 = 10%. Blue (green) curve: dip (dip′). Green curve: the visibility of dip with the relative phase θ between WCPs fixed at π/4.