Optical control of light propagation in photonic crystal based on electromagnetically induced transparency

Wang Dan^{1, 2}, Wu Jin-Ze^{1, 2}, Zhang Jun-Xiang^{1, 2, †,}

Periodic refractive index pattern. Red curve (multiplied by a factor of 100) is for the thermal atoms with N₀ = 10¹⁶ m⁻³, black curve is for the ultracold atoms with N₀ = 10¹⁸ m⁻³. Other parameters are Ω_c1 = Ω_c2 = 5Γ, Δ_p = 0.05Γ, and λ_c = 894.576 nm.