nonlinear metasurfaces

QUANTUM LOOKING GLASS — Green laser light illuminates a metasurface that is a hundred times thinner than paper, which was fabricated at the Center for Integrated Nanotechnologies. CINT is jointly operated by Sandia and Los Alamos national laboratories for the DOE Office of Science. (Photo by Craig Fritz)
One of quantum mechanics’ strangest and most useful phenomena can be triggered by a ultrathin device