Subluminal and superluminal light pulse propagation under external magnetic field in a vee-type three-level atomic medium

Thai Doan Thanh, Nguyen Tuan Anh, Nguyen Thi Thu Hien, Hoang Minh Dong, Nguyen Xuan Hao, Dinh Xuan Khoa, Nguyen Huy Bang

Abstract


In this work, we investigate subluminal and superluminal light propagation in a vee-type three-level atomic medium under an external magnetic field. The dispersion and absorption behaviors are studied for the cases of absence and presence of a magnetic field. It is found that under an electromagnetically induced transparency condition, the light pulse can be switched between subluminal and superluminal propagation by ON-OFF switching of the magnetic field. Finally, the transient response of the medium is discussed, which shows that the considered scheme has potential applications in magneto-optic switching devices.

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Photonics Letters of Poland - A Publication of the Photonics Society of Poland
Published in cooperation with SPIE

ISSN: 2080-2242