Quantum interference and manipulation of entanglement in silicon wire   waveguide quantum circuits
  Integrated quantum photonic waveguide circuits are a promising approach to realizing future photonic quantum technologies. Here, we present an integrated photonic quantum technology platform utilising the silicon-on-insulator material system, where quantum interference and the manipulation of quantum states of light are demonstrated in components orders of magnitude smaller than in previous implementations. Two-photon quantum interference is presented in a multi-mode interference coupler, and manipulation of entanglement is demonstrated in a Mach-Zehnder interferometer, opening the way to an all-silicon photonic quantum technology platform. 
Damien Bonneau, Erman Engin, Kazuya Ohira, Nob Suzuki, Haruhiko   Yoshida, Norio Iizuka, Mizunori Ezaki, Chandra M. Nataraja...
quant-ph