2017/03/24 by Jorge Cuadra, Denis G. Baranov, Martin Wersäll +3 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #2D Materials and Applications #Atomic physics #Condensed matter physics #Exciton #Materials science #Molecular physics #Monolayer #Nanophotonics #Nanotechnology #Optoelectronics #Physics #Plasmon #Plasmonic and Surface Plasmon Research #Polariton #Quasiparticle #Semiconductor #Strong Light-Matter Interactions #Trion #cond-mat.other #physics.optics
paper · pdf · doi:10.1021/acs.nanolett.7b04965
31 pages, 11 figures, Main text, Supplementary Info
arxiv created 2017/03/24 · openalex publication_date 2018/01/25 · arxiv updated 2018/04/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Formation of dressed light-matter states in optical structures, manifested as Rabi splitting of the eigen energies of a coupled system, is one of the key effects in quantum optics. In pursuing this regime with semiconductors, light is usually made to interact with excitons, electrically neutral quasiparticles of semiconductors; meanwhile interactions with charged three-particle states, trions, have received little attention. Here, we report on strong interaction between localized surface plasmons in silver nanoprisms and excitons and trions in monolayer tungsten disulfide (WS 2 ). We show that the plasmon–exciton interactions in this system can be efficiently tuned by controlling the charged versus neutral exciton contribution to the coupling process. In particular, we show that a stable trion state emerges and couples efficiently to the plasmon resonance at low temperature by forming three bright intermixed plasmon–exciton–trion polariton states. Our findings open up a possibility to exploit electrically charged polaritons at the single nanoparticle level.