[Th-P] Nanophotonics

[Th-P-74] Symmetry-Controlled 2D and 3D Chirality in Graphene-Loaded Non-Hermitian Photonic Crystals

〇Tooi Suzuki^1,2, Satoshi Suzuki^1,2, Shutaro Otsuka^1,2, Takahiro Uemura^1,2, Yuto Moritake⁴, Taiki Yoda¹, Masaaki Ono^2,3, Eiichi Kuramochi^2,3, Masaya Notomi^1,2,3 (1. Dept. of Physics, Inst. of Sci. Tokyo (Japan), 2. NTT Basic Res. Labs., NTT Inc. (Japan), 3. NTT Nanophotonics Center, NTT Inc. (Japan), 4. Inst. of Indus. Sci., The Univ. of Tokyo (Japan))

Based on experiments and symmetry-based theory, we demonstrate the correlation between 2D and 3D chirality in graphene-loaded non-Hermitian photonic crystals. Independent control of real and imaginary symmetry-breaking perturbations associates both chiralities with polarization singularities and exceptional points in momentum space.