Crossover between electromagnetically induced transparency and Autler

Crossover between electromagnetically induced transparency and Autler–Townes splitting with dispersion

Lu Xiao-Gang^a), Miao Xing-Xu^a), Bai Jin-Hai^a), Yuan Yuan^a),^b), Wu Ling-An^a), Fu Pan-Ming^a), Wang Ru-Quan†^a), Zuo Zhan-Chun‡^a)

Fitting of the absorption ((a), (c)) and dispersion ((b), (d)) models for two values of the coupling Rabi frequency Ω (0.3 Γ and 5.1 Γ ). Experimental data (black dots) are presented together with the best fitted results of functions A _EIT and D _EIT (red solid lines), and A _ATS and D _EIT (green solid lines). As A _EIT is not well suited for fitting experimental data, we obtain results which are unreasonable in reality (red solid line in panel (c)).