such that the UP and LP eigenstates are half donor character (equally distributed among all N molecules) and half photonic character. The Rabi splitting at resonance is Ω R = 2 √ Ng c . For λ D ̸ = 0, the donor state energies may not be identical (i.e. disordered) for R ̸ = 0 which causes the polariton eigenstates to no longer be perfectly bright or dark. In particular, there may be quasi-dark eigenstates with small amounts of photonic character, as well as eigenstates similar to the disorderless UP and LP states but with different amounts of donor character for different molecules.