Separating the classical and quantum information via quantum cloning
  An application of quantum cloning to optimally interface a quantum system with a classical observer is presented, in particular we describe a procedure to perform a minimal disturbance measurement on a single qubit by adopting a 1->2 cloning machine followed by a generalized measurement on a single clone and the anti-clone or on the two clones. Such scheme has been applied to enhance the transmission fidelity over a lossy quantum channel. 
M. Ricci, F. Sciarrino, N.J. Cerf, R. Filip, J. Fiurasek, and F. De   Martini