Characterization of the pairwise correlations in different quantum networks consisting of four-wave mixers and beamsplitters

Qi Jian¹, Xin Jun¹, Wang Hai-Long^{1, †}, Jing Jie-Tai^{1, 2, ‡}

(color online) The region plot of Eqs. (27) and (29). (a) The magenta region is the region of . (b) The green region is the region of .