title: Broken time reversal of light interaction with planar chiral nanostructures.
abstract: We report unambiguous experimental evidence of broken time-reversal symmetry for the interaction of light with an artificial nonmagnetic material. Polarized color images of planar chiral gold-on-silicon nanostructures consisting of arrays of gammadions show intriguing and unusual symmetry: structures, which are geometrically mirror images, lose their mirror symmetry in polarized light. The symmetry of images can be described only in terms of antisymmetry (black-and-white symmetry) appropriate to a time-odd process. The effect results from a transverse chiral nonlocal electromagnetic response of the structure and has some striking resemblance with the expected features of light scattering on anyon matter.
authors.affiliation: School of Physics and Astronomy, University of Southampton, SO17 1BJ, United Kingdom.
authors.forename: A S
authors.initials: AS
authors.lastname: Schwanecke
authors.forename: A
authors.initials: A
authors.lastname: Krasavin
authors.forename: D M
authors.initials: DM
authors.lastname: Bagnall
authors.forename: A
authors.initials: A
authors.lastname: Potts
authors.forename: A V
authors.initials: AV
authors.lastname: Zayats
authors.forename: N I
authors.initials: NI
authors.lastname: Zheludev