A new approach to analyzing visual images is proposed, based on the idea of converting an optical image into a spatially
varying pattern of polarized squeezed light, which is then used to produce a pattern of chiral edge currents in a thin film
topological insulator. Thin films of Bi or Bi doped with Sb which are punctured with an array of sub-micron holes may
be a way of realizing this kind of optical quantum information processing.