‘Perfect’ Faraday-Rotation Metasurface

We introduce a `perfect' Faraday-rotation metasurface. This metasurface provides arbitrary-angle, reflectionless and absorptionless nonreciprocal polarization rotation. Moreover, we show, using the surface susceptibility model, that such a metasurface involves a simultaneously electric and magnetic response, which may be realized with transistor-loaded straight and looped wires. This metasurface may potentially accommodate arbitrary incident and refraction angles.