Figure 4
Comparison of the estimation value of 
between different methods.
The solid line (H1) refers to our new scheme, the dashed line (H3) represents the standard three-intensity decoy-state MDI-QKD using HSPS, and the dash-dotted line (W3) corresponds to the case of using conventional three-intensity decoy-state MDI-QKD using WCS. For simplicity, we set the intensity of the decoy state as v = 0.1 for H3 and W3.
