Superluminal propagation via coherent manipulation of the Raman gain process

Agarwal, G. S. ; Dasgupta, Shubhrangshu (2004) Superluminal propagation via coherent manipulation of the Raman gain process Physical Review A, 70 (2). 023802_1-023802_5. ISSN 1050-2947

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Official URL: http://pra.aps.org/abstract/PRA/v70/i2/e023802

Related URL: http://dx.doi.org/10.1103/PhysRevA.70.023802

Abstract

We present a method of manipulating the Raman process by using a coherent control field which leads to splitting of the Raman gain peak into a doublet and anomalous dispersion in the region between the gain peaks. We show how the region of almost no Raman gain and strong anomalous dispersion is ideally suited for producing superluminal propagation. In particular, we show that the group index for a 23Na condensate could be in the range -103 to -104.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:11977
Deposited On:10 Nov 2010 06:35
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