Large refractive index without absorption via quantum interference in a semiconductor quantum well

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• 作者：Zhiping Wang ; ^{wzping@mail.ustc.edu.cn} ; ^{zhipwang@126.com} ; Benli Yu ; Shenglai Zhen ; Xuqiang Wu
• 关键词：Refractive index ; Quantum interference ; Semiconductor quantum well
• 刊名：Journal of Luminescence
• 出版年：2013
• 出版时间：February, 2013
• 年：2013
• 卷：134
• 期：Complete
• 页码：272-276
• 全文大小：345 K

文摘

We investigate the effect of quantum interference on the refractive property in a three-level semiconductor quantum well system. It is found that the refractive properties can be significantly improved via the coupling field, the pumping field and the relative phase. Otherwise, the positive or negative refractive index with vanishing absorption can be also easily obtained in this solid-state system, and the switch between positive refractive index and negative refractive index just by tuning the relative phase.