Superluminal propagation via coherent manipulation of the Raman gain process
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 23Na condensate could be in the range -10^3 to -10^4.
Citation
Agarwal, G. S., & Dasgupta, S. (2004). Superluminal propagation via coherent manipulation of the Raman gain process. Physical Review A, 70(2), Article 023802. https://doi.org/10.1103/PhysRevA.70.023802