文献类型：期刊文献

英文题名：Control of slow light in three- and four-level graphene nanostructures

作者：Xu, Fei[1];Zhu, Jiangzhuan[1];Fan, Shengfa[2];Qi, Yihong[1]

机构：[1]East China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2019

卷号：33

期号：20

外文期刊名：MODERN PHYSICS LETTERS B

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000476552800002)】；

基金：This work was supported by the National Natural Science Foundation of China under Grant No. 11874146.

语种：英文

外文关键词：Graphene nanostructures; Landau quantized levels; EIT; slow light

摘要：Graphene nanomaterials exhibit excellent optical properties when interacting with electromagnetical fields, which plays an important role in a wide range of applications such as optical communications, optical storage and other fields. Based on the electromagnetically induced transparency (EIT) effect, we investigate control of slow light in the Landau quantized graphene system with different three-level and four-level coupling schemes. Utilizing the EIT effect, group velocity of the probe fields can be significantly reduced and well controlled by manipulating Rabi frequencies and detunings of the coupling lasers as well as probe detuning. Furthermore, probe light with different frequencies can even be controlled in different EIT windows in the graphene system with the four-level scheme, which may find applications in signal selection and discrimination. This work can provide reference for the design of graphene-based quantum devices and have potential applications in optical communications and optical quantum information processing, etc.