Generation of tripartite Einstein–Podolsky–Rosen steering by cascaded nonlinear process
Liu Yu1, Liang Su-Ling1, Jin Guang-Ri1, Yu You-Bin1, †, Lan Jian-Yu2, He Xiao-Bin2, ‡, Guo Kang-Xian3
       

The values of S0 (red dashed line), S1 (black dot-dashed line), S2 (blue thin line), and Stot (green thick line) versus / the nonlinear coupling parameter κ1/κ0 with γ0 = 0.001, κ0 = 0.03, γ1 = γ2 = 0.05, and ω = 4γ0, respectively.