Physics Letters A
Light propagation from subluminal to superluminal in a three-level Λ-type system
Hui Sun, Hong Mei Guo, Yanfeng Bai, Dingan Han, Shuangli Fan, Xuzong Chen
Physics Letters A
Hui Sun, Hong Mei Guo, Yanfeng Bai, Dingan Han, Shuangli Fan, Xuzong Chen