title: Radiative topological states in resonant photonic crystals.
abstract: We present a theory of topological edge states in one-dimensional resonant photonic crystals with a compound unit cell. Contrary to the conventional electronic topological states, the modes under consideration are radiative; i.e., they decay in time due to the light escape through the structure boundaries. We demonstrate that the edge states survive despite their radiative decay and can be detected both in time- and frequency-dependent light reflection.
authors.affiliation: Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 194021 St. Petersburg, Russia.
authors.forename: A V
authors.initials: AV
authors.lastname: Poshakinskiy
authors.affiliation: Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 194021 St. Petersburg, Russia.
authors.forename: A N
authors.initials: AN
authors.lastname: Poddubny
authors.affiliation: Istituto dei Sistemi Complessi, CNR, C. P. 10, Monterotondo Stazione, Rome I-00016, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Pilozzi
authors.affiliation: Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 194021 St. Petersburg, Russia.
authors.forename: E L
authors.initials: EL
authors.lastname: Ivchenko