Fig. 1. Schematic of physical model for investigating influence of noise on EPR steering

Fig. 2. EPR steering number versus reflectivity R2 under different δA (r1=r2=0.345, R1=0.5, R4=1). (a) (SBA)2, (SAB)2; (b) (SCA)2, (SAC)2

Fig. 3. EPR steering number versus reflectivity R2 for a^1in and a^2in with different squeezing degrees (δA=0.2, R1=0.5, R4=1). (a) (SBA)2, (SAB)2; (b) (SCA)2, (SAC)2