Tunneling Control of Transmission Coefficient and Group Index in a Quantum Dot Nanostructure

Figure 2

Real and imaginary parts of the linear susceptibility versus probe field detuning. The selected parameters are (a) 𝑇₁=𝑇₂=0.5meV; (b) 𝑇₁=2meV, 𝑇₂=0.5meV; (c) 𝑇₁=0.5meV, 𝑇₂=2meV; (d) 𝑇₁=𝑇₂=2meV. The other parameters are 𝛾₄₁=𝛾₄₂=𝛾₃₁=𝛾₃₂=0.1meV, Γ₁₂=5meV, Γ₃₁=2meV, Γ₄₁=Γ₄₂=Γ₃₂=0.5meV, Γ₄₃=2meV, 𝛾₁₂=0.05meV, 𝜔₂₁=𝜔₃₄=0.2meV, and Λ=0, Ω_𝑝=0.001meV.

(a)

(b)

(c)

(d)