Figure 2
From: Two-dimensional distributed-phase-reference protocol for quantum key distribution
Secret key rate measured in bits per pulse.
Performance versus (a) distance in the case of fixed visibility, V = 0.9, and (b) visibility at a channel length of L = 100 km. For each of the three protocols, an optimization was performed with respect to the mean photon number μ (see Supplementary Fig. S2). Parameters: ηd = 0.1, pd = 2 × 10−8, αloss = 0.2 dB/km, and pdecoy = 0.02 for COW and DPTS.
