Optical emulation of double-continuum Fano interference by circularly   dichroic plasmonic metasurfaces
  Classical emulation of a ubiquitous quantum mechanical phenomenon of double-continuum Fano (DCF) interference using metasurfaces is experimentally realized by engineering the near-field interaction between two bright and one dark plasmonic modes. The competition between the bright modes, with one of them effectively suppressing the Fano interference for the orthogonal light polarization, is discovered and explained by the analytic theory of the plasmonic DCF interference, which is further applied to predicting the circularly dichroic optical field concentration by plasmonic metasurfaces. 
Nihal Arju, Tzuhsuan Ma, Alexander Khanikaev, David Purtseladze, and   Gennady Shvets
cond-mat.mtrl-sci physics.optics