Spontaneous emission from a microwave-driven four-level atom in an anisotropic photonic crystal

Jiang Li^{1, †,}, Wan Ren-Gang^{2, ‡,}, Yao Zhi-Hai¹

Spontaneous emission spectra S(δ_k) (in units of ) each as a function of detuning frequency δ_k for different atomic initial states. (a) A₁ (0) = 1, A₂ (0) = 0, A₃ (0) = 0; (b) A₁ (0) = 0, A₂ (0) = 1, A₃ (0) = 0; (c) , , A₃(0) = 0; (d) A₁(0) = 0, , . The other parameters are set to be |Ω₁ | = 0.5, Ω₂ = 0.5, Ω₃ = 0.5, θ = 0.2π, δ_14c1 = −0.1, and δ_14c2 = 0.15.