Figure 4

Dressed MWM processes by scanning Δ₄. (a-b) The enhancement and suppression of FWM2 and SWM1 dressed by the SWM2 process with Δ₁ growing at Δ₂ = Δ₃ = 0 for 37D and 54D, respectively. The Lorentzian profiles (curve constituted of the baseline of each signal) are the FWM2 and SWM1 signal versus Δ₁ for 37D and 54D, respectively. (c-d) The enhanced and suppressed SWM1 by increasing the Δ₂ with Δ₁ = −Δ₃ = 30 MHz for 37D and 54D, respectively. The Lorentzian profiles are the SWM1 signal versus Δ₂ for 37D and 54D. (a1-d1) are the theoretical curves corresponding to (a-d) with ΔΦ′ = −π/6, respectively. The Rydberg-induced phase shift difference between 37D and 54D is about π/4. N₀ = 1 × 10¹² cm⁻³↔Ω₁ = 2π × 54 MHz at 0.5 mW, Ω₂ = 2π × 7.6 MHz at 200 mW, Ω₄ = 2π × 116 MHz at 4 mW, Ω₃ = 2π × 170 MHz at 5 mW, Ω₃′ = 2π × 275 MHz at 13 mW.