Superluminal propagation of an optical pulse in a Doppler broadened three-state, single channel active Raman gain medium

Details Superluminal propagation of an optical pulse in a Doppler broadened three-state, single channel active Raman gain medium Superluminal propagation of an optical pulse in a Doppler broadened three-state, single channel active Raman gain medium

2007-01-22

arxiv.org/abs/quant-ph/0701164v1

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevA.76.033819

Using a single channel active Raman gain medium we show a $(220\pm 20)$ns advance time for an optical pulse of $\tau_{FWHM}=15.4 \mu$s propagating through a 10 cm medium, a lead time that is comparable to what was reported previously. In addition, we have verified experimentally all the features associated with this single channel Raman gain system. Our results show that the reported gain-assisted superluminal propagation should not be attributed to the interference between the two frequencies of the pump field.

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