Experimental observation of topological Z2 exciton-polaritons in transition metal dichalcogenide monolayers
Abstract
The rise of quantum science and technologies motivates photonics research to seek new platforms with strong light-matter interactions to facilitate quantum behaviors at moderate light intensities. Topological polaritons (TPs) offer an ideal platform in this context, with unique properties stemming from resilient topological states of light strongly coupled with matter. Here we explore polaritonic metasurfaces based on 2D transition metal dichalcogenides (TMDs) as a promising platform for topological polaritonics. We show that the strong coupling between topological photonic modes of the metasurface and excitons in TMDs yields a topological polaritonic Z2 phase. We experimentally confirm the emergence of one-way spin-polarized edge TPs in metasurfaces integrating MoSe2 and WSe2. Combined with the valley polarization in TMD monolayers, the proposed system enables an approach to engage the photonic angular momentum and valley and spin of excitons, offering a promising platform for photonic/solid-state interfaces for valleytronics and spintronics.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 20, 2021
- Source ID
- 10.1038/s41467-021-24728-y
Entities
People
- Alexander B Khanikaev
- Andrea Alù
- Anton K Samusev
- Anton Vakulenko
- Dmitry Krizhanovskii
- Ekaterina Khestanova
- Fedor Benimetskiy
- Ivan S Sinev
- Maurice Skolnick
- Mengyao Li
- Sriram Guddala
- Svetlana Kiriushechkina
- Tatyana Ivanova
- Vinod Menon
Organizations
- Engineering and Physical Sciences Research Council
- Ministry of Education and Science of the Russian Federation
- National Science Foundation
- Russian Center for Science Information
- Russian Science Foundation
- United States Department of Defense