Knob for changing light propagation from subluminal to superluminal - art.no. 053809

Authors
Agarwal, GS Dey, TN Menon, S
Citation
Gs. Agarwal et al., Knob for changing light propagation from subluminal to superluminal - art.no. 053809, PHYS REV A, 6405(5), 2001, pp. 3809
Citations number
26
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW A
ISSN journal
10502947 → ACNP
Volume
6405
Issue
5
Year of publication
2001
Database
ISI
SICI code
1050-2947(200111)6405:5<3809:KFCLPF>2.0.ZU;2-T
Abstract
We show how the application of a coupling field connecting the two lower me tastable states of a Lambda system can produce a variety of effects on the propagation of a weak electromagnetic pulse. In principle the light propaga tion can be changed from subluminal to superluminal. The negative group ind ex results from regions of anomalous dispersion and gain in susceptibility.