| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1861053 | Physics Letters A | 2009 | 5 Pages |
Abstract
A dark state superposition is employed and formed a tripod-like system. A weak probe pulse propagates in it can experience a crossover from absorption to transparent and then to amplification, and its group velocity can be controlled in any desired speed by determining the initial states of the dark state superposition.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Yongyao Li, Huarong Zhang, Wei Pang, Yongzhu Chen,