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Electromagnetically induced transparency and fourwave mixing in a cold atomic ensemble with large optical depth

Geng, Jiao; Campbell, Geoff; Bernu, Julien; Higginbottom, Daniel; Sparkes, Benjamin; Assad, Syed; Zhang, Weiping; Robins, Nicholas; Lam, Ping Koy; Buchler, Benjamin

Description

We report on the delay of optical pulses using electromagnetically induced transparency (EIT) in an ensemble of cold atoms with an optical depth exceeding 500. To identify the regimes in which four-wave mixing (4WM) impacts on EIT behaviour, we conduct the experiment in both 85Rb and 87Rb. Comparison with theory shows excellent agreement in both isotopes. In 87Rb negligible 4WM was observed and we obtained one pulse-width of delay with 50% efficiency. In 85Rb 4WM contributes to the output. In...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
URI: http://hdl.handle.net/1885/76319
Source: New Journal of Physics
DOI: 10.1088/1367-2630/16/11/113053

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