Autler-Townes effect in the D1-line hyperfine structure of an alkali atom

Details Autler-Townes effect in the D1-line hyperfine structure of an alkali atom Autler-Townes effect in the D1-line hyperfine structure of an alkali atom

2009-03-20

arxiv.org/abs/0903.3520v1

Optics & Spectroscopy, #2, Vol. 108, 2010

Physics

Quantum Physics

12 pages, 5 figures

Scientific paper

We consider the Autler-Townes effect when a strong coupling field is applied in the hyperfine manifold of an alkali atom. Explicit solution is obtained in the case of the D1-line. We show how the hyperfine interaction modifies the dressing effects associated with the strong field as well as the sample susceptibility with respect to the probe mode. Particularly, if the strong field is far detuned from the atomic resonance line the Autler-Townes structure differs significantly from the prediction of the Lambda-type approximation. We also find that tuning the strong field in between the upper state hyperfine components enhances the Autler-Townes effect. The results are discussed in the context of quantum memory protocols based on the stimulated Raman process or EIT effect.

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