Figure 17
From: Generalized sequential state discrimination for multiparty QKD and its optical implementation
The graph of \(f(\bar{\eta })\). In these graphs, the solid black line, the solid blue line, and the solid red line denote the cases of \(s=0.05,0.10\), and 0.15, respectively. These graphs show that \(f(\bar{\eta })\) is a monotonically increasing function of \(\bar{\eta }\). Because \(\bar{\eta }\) is a noise strength of channel, these graphs tell that noise of channel can make a bad influence on the secret key rate.
