Proceedings of MATSUS23 & Sustainable Technology Forum València (STECH23) (MATSUS23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.269
Publication date: 22nd December 2022
Recently, microcavity exciton polariton research has attracted considerable interests in a number of excellent optical gain materials that demonstrate unique properties compared with conventional III-V or II-VI semiconductor quantum wells and organic semiconductors. Those materials include transition metal dichalcogenides (TMDs), and certain halide perovskite semiconductors. Particularly, those materials exhibit large exciton binding energies (much larger than thermal fluctuation energy ~ 26 meV), large oscillator strength and peculiar electronic band structures such as valley polarization or encoded chiroptical responses. In this talk, we will discuss our recent effort in manipulating exciton polariton condensates in halide perovskite semiconductors microcavities, for instance using artificial lattices to engineer the strong optical responses including topological properties, and their ultrafast propagation. Finally, we will briefly discuss the nonlinear optical properties in polariton condensate trapped in artificial potential landscapes, by a pump-probe transient spectroscopy at momentum space. Our results demonstrate a promising perspective of polaritonics in a wide range of ultrafast optical and photonic applications at room temperature.
- S. Ghosh, R. Su*, J.X. Zhao, A. Fieramosca, J.Q. Wu, T.F. Li, Q. Zhang, F. Li, Z.H. Chen, T.C.H. Liew, D. Sanvitto, Qihua Xiong*, “Microcavity exciton polaritons at room temperature”, Photonics Insights 1, R04 (2022) (review)
- J.Q. Wu#, S. Ghosh#, R. Su*, A. Fieramosca, T.C.H. Liew*, and Qihua Xiong*, “Nonlinear parametric scattering of exciton polaritons in perovskite microcavities”, Nano Lett. 21, 3120–3126 (2021)
- J.G. Feng et al., “All-optical switching based on interacting exciton polaritons in self-assembled perovskite microwires”, Science Advances 7, eabj6627 (2021)
- R. Su et al., “Optical control of topological polariton phase in a perovskite lattice”, Science Advances 7, eabf8049 (2021)
- R. Su et al., “Observation of exciton polariton condensation in a perovskite lattice at room temperature”, Nature Physics 16, 301-306 (2020)
- R. Su et al., “Room temperature long-range coherent exciton polariton condensate flow in lead halide perovskites”, Science Advances 4, eaau0244 (2018)
- R. Su et al., “Room-temperature polariton lasing in all-inorganic perovskite nanoplatelets”, Nano Lett. 17, 3982–3988 (2017)
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