Exceptional points for resonant states on parallel circular dielectric cylinders
Exceptional points for resonant states on parallel circular dielectric cylinders
Exceptional points (EPs) are special parameter values of a non-Hermitian eigenvalue problem where eigenfunctions corresponding to a multiple eigenvalue coalesce. In optics, EPs are associated with a number of counterintuitive wave phenomena and have potential applications in lasing, sensing, mode conversion, and spontaneous emission processes. For open photonic structures, resonant …