Role of dressed-state interference in electromagnetically induced transparency

Abstract

Electromagnetically induced transparency (EIT) in three-level systems uses a strong control laser on one transition to modify the absorption of a weak probe laser on a second transition. The control laser creates dressed states whose decay pathways show interference. We study the role of dressed-state interference in causing EIT in the three types of three-level systems -- lambda ($\Lambda$), ladder ($\Xi$), and vee (V). In order to get realistic values for the linewidths of the energy levels involved, we consider appropriate hyperfine levels of ${}^{87}$Rb. For such realistic systems, we find that dressed-state interference causes probe absorption---given by the imaginary part of the susceptibility---to go to zero in a $\Lambda$ system, but plays a negligible role in $\Xi$ and V systems.

11 pages, 7 figures

References in corpus (1)

• Precise measurement of hyperfine intervals using avoided crossing of dressed states

Cited by in corpus (8)

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• Self-induced transparency and optical transients in atomic vapors