Sub-wavelength localization of near-fields in coupled metallic spheres   for single emitter polarization analysis
  We numerically demonstrate selective near-field localization determined by the polarization state of a single emitter coupled to plasmonic nano-cluster. Seven gold nanospheres are carefully arranged such that up to ten polarization states of the single emitter, including linear, circular, and elliptical polarizations, can be distinguished via the distinct field localization in four gaps. The ability to transform polarization state into field spatial localization may find application for single emitter polarization analysis. 
Po-Nan Li, Hsiu-Hao Tsao, Jer-Shing Huang, and Chen-Bin Huang
physics.optics