Phase-controlled coherent population trapping in superconducting quantum circuits*
Cheng Guang-Linga)†, Wang Yi-Pinga), Chen Ai-Xia),b)‡
       
The steady-state populations | ρ 21|, ρ 11, ρ 22 as a function of the probe detuning δ 31/γ31, where the parameters are given by γ32 = γ31, γ21 = 0.01γ31, δ 32 = 0, | Ω 32| = | Ω 31| = 4γ31, ϕ = π /2, | Ω 21| = 0 (a), | Ω 21| = 0.4γ31 (b), and | Ω 21| = 0.8γ31 (c).