Fig. 5: P2 SSB localized structures.
From: Nonlinear topological symmetry protection in a dissipative system
a–c P2 domain walls observed for repulsive interactions (ϕ2 > 0) with X = 50 and Δ = 10. a Temporal intensity profiles of the + (blue) and − (orange) hybrid modes at a selected odd (left) and even (right) roundtrip. The evolution of these profiles over 20 subsequent resonator roundtrips is illustrated in (b, c), respectively, for the + and − hybrid modes. Inset: close up on one of the domain walls. d–f same as a–c but for P2 bright symmetry-broken cavity solitons observed for attractive interactions (ϕ2 < 0) with X = 30 and Δ = 14.5. g–k Breathing dynamics of the P2 bright symmetry-broken cavity solitons observed with X = 10 and Δ = 5.2. Same format as the other two examples with the addition of (k) an extra pseudo-color plot for the evolution of the total intensity and (h) a plot providing details of the evolution of the intensity at the center of the structure (blue/orange, +/− hybrid mode; green, total intensity, halved).
