Nonequilibrium Polaritonics - Nonlinear Effects and Optical Switching
  We report a theoretical non-equilibrium description of polaritonics and we propose ultrafast all- optical switching due to highly nonlinear polaritonics. The electronic band structure within gold (Au) nano grains is modified by external laser light. The Au grains are coupled to a single mode photonic waveguide and we derive a strong transmission reduction of switching originating from the establishd quantum interference with a finite lifetime. 
Regine Frank
cond-mat.mtrl-sci cond-mat.mes-hall physics.optics quant-ph