Figure 3
From: Cavity-based architecture to preserve quantum coherence and entanglement
Non-Markovianity quantifier 
of Eq. (9) of the qubit dynamics as a function of J/Γ1 for weak (κ = 0.24 Γ1) and strong (κ = 0.4 Γ1) coupling regimes to cavity C1 and a fixed decay rate Γ2 = 0.5 Γ1 of the cavity C2.
