Fig. 2: Correlation between phases of two microdisks at DP.
From: Diabolical points in coupled active cavities with quantum emitters
a One eigenspace with different values of γ, Ja = −Jb = J and ϕa = ϕb = 0. This eigenspace refers to the upper green line in Fig. 1 b. b Eigenspaces and correlations between two microdisks. The black dots refer to trivial systems. The blue line refers to a DP without backscattering. The red lines refer to two DPs with backscattering for γ = 0.30 π with a phase shift. The solid red line corresponds to the red line in (a) and a point in the upper green line in Fig. 1 (b). The dashed red line corresponds to a point in the bottom green line in Fig. 1 (b).
