A Knob for Changing Light Propagation from Subluminal to Superluminal
Quantum Physics
2009-11-07 v1
Abstract
We show how the application of a coupling field connecting the two lower metastable states of a lambda-system can produce a variety of new results on the propagation of a weak electromagnetic pulse. In principle the light propagation can be changed from subluminal to superluminal. The negative group index results from the regions of anomalous dispersion and gain in susceptibility.
Cite
@article{arxiv.quant-ph/0106107,
title = {A Knob for Changing Light Propagation from Subluminal to Superluminal},
author = {G. S. Agarwal and Tarak Nath Dey and Sunish Menon},
journal= {arXiv preprint arXiv:quant-ph/0106107},
year = {2009}
}
Comments
6 pages,5 figures, typed in RevTeX, accepted in Phys. Rev. A