Coherent Coupling of WS2 Monolayers with Metallic Photonic Nanostructures at Room Temperature

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• 作者：Shaojun Wang ; Songlin Li ; Thibault Chervy ; Atef Shalabney ; Stefano Azzini ; Emanuele Orgiu ; James A. Hutchison ; Cyriaque Genet ; Paolo Samorì ; Thomas W. Ebbesen
• 刊名：Nano Letters
• 出版年：2016
• 出版时间：July 13, 2016
• 年：2016
• 卷：16
• 期：7
• 页码：4368-4374
• 全文大小：504K
• 年卷期：0
• ISSN：1530-6992

文摘

Room temperature strong coupling of WS₂ monolayer exciton transitions to metallic Fabry–Pérot and plasmonic optical cavities is demonstrated. A Rabi splitting of 101 meV is observed for the Fabry–Pérot cavity. The enhanced magnitude and visibility of WS₂ monolayer strong coupling is attributed to the larger absorption coefficient, the narrower line width of the A exciton transition, and greater spin–orbit coupling. For WS₂ coupled to plasmonic arrays, the Rabi splitting still reaches 60 meV despite the less favorable coupling conditions, and displays interesting photoluminescence features. The unambiguous signature of WS₂ monolayer strong coupling in easily fabricated metallic resonators at room temperature suggests many possibilities for combining light–matter hybridization with spin and valleytronics.