Anisotropic lattice induces high-Q chiroptical responses in surface lattice resonance metasurfaces

Chirality is an intrinsic property of an object that cannot coincide with its mirror image by translation or rotation. In order to realize strong chiral light-matter interactions which are usually weak in natural materials for practical applications, artificial sub-wavelength structures such as metamaterials, metasurfaces, and plasmonic nanostructures have attracted increasing attentions.