Schwanecke, A.S., Krasavin, A.V., Bagnall, D.M., Potts, A., Zayats, A.V. and Zheludev, N.I.
Broken time reversal of light interaction with planar chiral nanostructures.
Physical Review Letters, 91, (24), . (doi:10.1103/PhysRevLett.91.247404).
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.
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