Photonic Quantum Computation with Waveguide-Linked Optical Cavities and   Quantum Dots
  We propose a new scheme for solid-state photonic quantum computation in which trapped photons in optical cavities are taken as a quantum bit. Quantum gates can be realized by coupling the cavities with quantum dots through waveguides. The proposed scheme allows programmable and deterministic gate operations and the system can be scaled up to many quantum bits. 
Makoto Yamaguchi, Takashi Asano, Yoshiya Sato and Susumu Noda
quant-ph