On-chip generation and demultiplexing of quantum correlated photons   using a silicon-silica monolithic photonic integration platform
  We demonstrate the generation and demultiplexing of quantum correlated photons on a monolithic photonic chip composed of silicon and silica-based waveguides. Photon pairs generated in a nonlinear silicon waveguide are successfully separated into two optical channels of an arrayed-waveguide grating fabricated on a silica-based waveguide platform. 
Nobuyuki Matsuda, Peter Karkus, Hidetaka Nishi, Tai Tsuchizawa,   William J. Munro, Hiroki Takesue, Koji Yamada
quant-ph physics.optics