Figure 2
From: Role of flow of information in the speedup of quantum evolution
(a) The average speed of quantum evolution Va and (b) the non-Markovianity ℵ between the time zero and Γτ = 10 (in units of 1/Γ) as a function of phase ϕ for various values of memory time Γtd with Ω = 0, Δ = 0 and β = 1.
