About the use of entanglement in the optical implementation of quantum   information processing
  We review some applications of entanglement to improve quantum measurements and communication, with the main focus on the optical implementation of quantum information processing. The evolution of continuos variable entangled states in active optical fibers is also analyzed. 
M. G. A. Paris, G. M. D'Ariano, P. Lo Presti, and P. Perinotti