A Knob for Changing Light Propagation from Subluminal to Superluminal

Details A Knob for Changing Light Propagation from Subluminal to Superluminal A Knob for Changing Light Propagation from Subluminal to Superluminal

2001-06-19

arxiv.org/abs/quant-ph/0106107v1

Phys. Rev. A, 64, 053809 (2001)

Physics

Quantum Physics

6 pages,5 figures, typed in RevTeX, accepted in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.64.053809

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.

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