title: Experimental demonstration of topological effects in bianisotropic metamaterials.
abstract: Existence of robust edge states at interfaces of topologically dissimilar systems is one of the most fascinating manifestations of a novel nontrivial state of matter, a topological insulator. Such nontrivial states were originally predicted and discovered in condensed matter physics, but they find their counterparts in other fields of physics, including the physics of classical waves and electromagnetism. Here, we present the first experimental realization of a topological insulator for electromagnetic waves based on engineered bianisotropic metamaterials. By employing the near-field scanning technique, we demonstrate experimentally the topologically robust propagation of electromagnetic waves around sharp corners without backscattering effects.
authors.affiliation: Nonlinear Physics Center, Australian National University, Canberra ACT 2601, Australia.|Departament of Nanophotonics and Metamaterials, ITMO University, St. Petersburg 197101, Russia.
authors.forename: Alexey P
authors.initials: AP
authors.lastname: Slobozhanyuk
authors.affiliation: Department of Physics, Queens College of City University of New York, NY 11367, USA.|Department of Physics, Graduate Center of City University of New York, NY 10016, USA.
authors.forename: Alexander B
authors.initials: AB
authors.lastname: Khanikaev
authors.affiliation: Departament of Nanophotonics and Metamaterials, ITMO University, St. Petersburg 197101, Russia.
authors.forename: Dmitry S
authors.initials: DS
authors.lastname: Filonov
authors.affiliation: Nonlinear Physics Center, Australian National University, Canberra ACT 2601, Australia.
authors.forename: Daria A
authors.initials: DA
authors.lastname: Smirnova
authors.affiliation: Nonlinear Physics Center, Australian National University, Canberra ACT 2601, Australia.
authors.forename: Andrey E
authors.initials: AE
authors.lastname: Miroshnichenko
authors.affiliation: Nonlinear Physics Center, Australian National University, Canberra ACT 2601, Australia.|Departament of Nanophotonics and Metamaterials, ITMO University, St. Petersburg 197101, Russia.
authors.forename: Yuri S
authors.initials: YS
authors.lastname: Kivshar