Figure 5
From: Optimal architectures for long distance quantum communication

The optimized cost coefficient C′ as a function of εG for t0 = 1 μs, ηc ∈ {30%, 80%, 100%} and (a) Ltot = 1000 km, (b) Ltot = 10,000 km. The associated optimized QR protocols are indicated in different colors.