Unlocking Wavefront Manipulation in Exciton-Polaritons by Structuring WS <sub>2</sub> as Phase Gradient Metasurfaces
excitons, forming self-hybridized EPs with a Rabi splitting of ∼150 meV. Meanwhile, the anisotropic nanoantenna geometry induces high birefringence, yielding two orthogonally polarized EP resonances for efficient cross-polarization conversion. Leveraging the geometric phase principle, spatially arranged meta-atoms imprint pixelated phase profiles onto the EP output beam. Experimentally, we realize deflection and focusing of the EP beam. This work merges the subwavelength polariton confinement with metasurface wavefront engineering, paving the way toward compact multifunctional polaritonic devices.
Authors
- Yinchang Liao
- Yuhua Chen (ORCID: https://orcid.org/0000-0001-7918-2529)
- Yue Wang (ORCID: https://orcid.org/0000-0003-0098-5359)
- Zhiwei Yan (ORCID: https://orcid.org/0000-0001-6635-482X)
- Kai Ding
- Tao Wang
- Meng Xia
- Hongxin Sun
Institutions
- Shanghai University (CN)
- University of Science and Technology of China (CN)
- Chinese Academy of Sciences (CN)
- College of Medical Sciences (NP)
- Suzhou Institute of Nano-tech and Nano-bionics (CN)
- Wuhan Engineering Science & Technology Institute (CN)
Publication Details
- Journal
- Nano Letters
- Published
- 2026-04-22
- DOI
- https://doi.org/10.1021/acs.nanolett.6c00552
- Primary Topic
- Strong Light-Matter Interactions
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Jiangsu Science and Technology Department
- National Key Research and Development Program of China
- Science and Technology Program of Suzhou