Figure 1

Secret key rate in logarithmic scale versus the overall system loss for the ideal discrete phase-randomization scenario given by Eq. (1), as a function of the total number of random phases N selected by Alice. The solid lines correspond to the parameter estimation procedure based on SDP and basis mismatched events considered in this work, while the dashed-dotted lines represent the same procedure overlooking basis mismatched events. Finally, the dotted lines correspond to the analysis in [42] using linear programming