EXCITON-POLARITON CONDENSATE

Strong light-matter coupling: avoided crossing, polariton branches, condensation
Polariton Physics

Cavity photon + quantum well exciton → polariton

Hopfield coefficients:
|X|² = ½(1 + Δ/√(Δ²+4g²)) (exciton)
|C|² = 1 - |X|² (photon)

Avoided crossing: gap = 2g (Rabi splitting)

Rabi: —
Exciton fraction: —