Fig. 1. System under consideration and interaction field. (a) Schematic of energy levels for asymmetric double quantum dot system interacting with probe field and standing-wave pump field; (b) schematic of standing-wave pump field and weak probe field propagating through medium

Fig. 2. Absorption and dispersion spectra in double quantum dot system under different conditions. (a) T_e=2, ω₂₄=0, Δ₂=0, Ω_C=0; (b) T_e=2, ω₂₄=0, Δ₂=0, Ω_C=1; (c) T_e=2, ω₂₄=1.5, Δ₂=2, Ω_C=1

Fig. 3. IP(θ) versus sinθ under different conditions. (a) Without tunneling voltage, T_e=0, ω₂₄=1.5, Δ₂=0, Δ₁=0.5, Ω_C=1;(b) with tunneling voltage, T_e=2, ω₂₄=0, Δ₁=0.5, Δ₂=0, Ω_C=1; (c) with tunneling voltage, T_e=2, ω₂₄=1.5, Δ₁=0.6,Δ₂=2, Ω_C=1

Fig. 4. First-order diffraction intensity versus T_e under ω₂₄=1.5, Δ₁=0.6, Δ₂=2, and Ω_C=1

Fig. 5. First-order diffraction intensity versus ΩC under T_e=2.9, ω₂₄=1.5, Δ₁=0.6, and Δ₂=2