The quantum interference effect on two-dimensional atomic localization by taking N = 0. The other parameters are chosen as γ₂ = 1, Ω₁ = Ω₂ = 10, Δ₁ = −Δ₂ = 1, (a) β = 0; (b) β = 0.5; (c) β = 0.9; (d) β = 0.99.