Two-color laser modulation of magnetic Feshbach resonances
Li Jian, Liu Yong, Huang Yin, Cong Shu-Lin†
       
Scattering length as a function of the ratio K = Ω 1/ Ω 2 for (a) Ω 2 = 2γ e , Δ e 1 = 2.5γ e , and Δ e 2 = −2.5γ e , (b) for Ω 2 = 2γ e , Δ e 1 = 2.5γe, and Δ e 2 = 2.5γ e . The black line shows the real part a / a bg and the red line shows the imaginary part b / a bg .