Optical control of photon tunneling through an array of nanometer scale   cylindrical channels
  We report first observation of photon tunneling gated by light at a different wavelength in an artificially created array of nanometer scale cylindrical channels in a thick gold film. Polarization properties of gated light provide strong proof of the enhanced nonlinear optical mixing in nanometric channels involved in the process. This suggests the possibility of building a new class of "gated" photon tunneling devices for massive parallel all-optical signal and image processing. 
I.I. Smolyaninov, A.V. Zayats, A. Stanishevsky, C.C. Davis