Transport and Spatial Separation of Valley Coherence via Few Layer WS2 Exciton–Polaritons

• Published in: ACS photonics Vol. 11; no. 3; pp. 1078 - 1084
• Main Authors: De-Eknamkul, Chawina, Huang, Wenzhuo, Zhang, Xingwang, Ren, Yundong, Cubukcu, Ertugrul
• Format: Journal Article
• Language: English
• Published: American Chemical Society 20.03.2024
• Subjects: atomically thin waveguide; guided-mode resonance; directional propagation; 2D materials; WS2

The optical response in two-dimensional transition-metal dichalcogenides (2D TMDCs) is dominated by excitons. The lack of spatial inversion symmetry in the hexagonal lattice within each TMDC layer leads to valley-dependent excitonic emission of photoluminescence. Here, we demonstrate experimentally...