Chiral transmission by an open evolution trajectory in a non-Hermitian system
Chinese Academy of SciencesChiral transmission for a pair of eigenmodes has been realized by a closed exceptional-point-encircling trajectory in (anti-) parity-time-symmetric systems. Scientist in China explored an open trajectory linking two infinite points, enabling high-efficiency chiral transmission with each eigenmode localized in a single waveguide, more accessible in practical photonic integrated circuits.