Field Test of Classical Symmetric Encryption with Continuous Variable   Quantum Key Distribution
  We report on the design and performance of a point-to-point classical symmetric encryption link with fast key renewal provided by a Continuous Variable Quantum Key Distribution (CVQKD) system. Our system was operational and able to encrypt point-to-point communications during more than six months, from the end of July 2010 until the beginning of February 2011. This field test was the first demonstration of the reliability of a CVQKD system over a long period of time in a server room environment. This strengthens the potential of CVQKD for information technology security infrastructure deployments. 
Paul Jouguet, S\'ebastien Kunz-Jacques, Thierry Debuisschert, Simon   Fossier, Eleni Diamanti, Romain All\'eaume, Rosa Tuall...
quant-ph