Communications in Theoretical Physics

Sub- and Super-Luminal Phenomena in a Doubly Driven Four-Level System

Dingan Han, Yaguang Zeng, Weicheng Chen, Shaoguang Dong, Chunqing Huang, Chuan-Yun Zhu, Peiying Liang

Published Apr 1, 2011• 12 citations

Abstract

With the occurrence of an adding driving field, the properties of the dispersion and the absorption of a four-level system are changed greatly. The system can produce the normal and anomalous dispersion regions with proper parameters. Here, the driving fields can be seemed as knobs to manipulate the group velocity of a weak probe field between subluminal and superluminal.

DOI: 10.1088/0253-6102/55/4/29

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