Fig. 6. 2D chiral polaritons in BDT-based oligothiophene.

Polaritonic dissymmetry ${\tilde{g}}^{\alpha }$ for BDT-based oligothiophene as predicted by our theory (a). Overlapping states drawn in order of $\mid {\tilde{g}}^{\alpha }\mid$ such that states with greatest $\mid {\tilde{g}}^{\alpha }\mid$ are visible. The molecular model of the BDT-based oligothiophene was adopted from our previous work⁴⁷ (see text for details). Molecular structure shown in (b) with relevant ground-to-excited state transition dipoles indicated, labeled 1, 2, and 3, in order of increasing transition energy (orientation of dipoles relative to the molecular structure is arbitrary to within variations between electronic structure calculations and spectral fitting⁴⁷). Also shown are results without the vibrational modes and only including transitions 1 and 3 (c, d).