Extended Data Figure 3: Effect of wall thickness on spectroscopic line profiles of the Sinai billiard.
From: Observation of non-Hermitian degeneracies in a chaotic exciton-polariton billiard
a, b, Profiles are shown in the vicinity of the degeneracy for the levels highlighted in Fig. 1c, d with thick (a) and thin (b) walls. The thick lines demonstrate the principle of data extraction for anti-crossing (a) and crossing (b) of the energy levels corresponding to those shown in Fig. 2a and b, respectively
