Group velocity study in hot Rb vapor with buffer gas

Details Group velocity study in hot Rb vapor with buffer gas Group velocity study in hot Rb vapor with buffer gas

2003-09-24

arxiv.org/abs/quant-ph/0309173v1

Journal of Modern Optics 50 (15-17): 2645-2654 OCT-NOV 2003

Physics

Quantum Physics

6 pages, 7 figures

Scientific paper

10.1080/0950034032000120777

We study the behavior of the group velocity of light under conditions of electromagnetically induced transparency (EIT) in a Doppler broadened medium. Specifically, we show how the group delay (or group velocity) of probe and generated Stokes fields depends on the one-photon detuning of drive and probe fields. We find that for atoms in a buffer gas the group velocity decreases with positive one-photon detuning of the drive fields, and increases when the fields are red detuned. This dependence is counter-intuitive to what would be expected if the one-photon detuning resulted in an interaction of the light with the resonant velocity subgroup.

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