Group velocity study in hot 87 Rb vapour with buffer gas

2003/01/01 by Eugeniy E. Mikhailov, Yuri V. Rostovtsev, Е. Е. Михайлов +1
Physics and Astronomy · #Atomic and Subatomic Physics Research #Nuclear physics research studies #Quantum, superfluid, helium dynamics #quant-ph

paper · pdf · doi:10.1080/0950034032000120777

published as Journal of Modern Optics 50 (15-17): 2645-2654 OCT-NOV 2003 · 6 pages, 7 figures

openalex publication_date 2003/01/01 · arxiv created 2003/09/24 · arxiv updated 2009/12/01 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28

Abstract

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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