Separating the classical and quantum information via quantum cloning
M. Ricci, F. Sciarrino, N. J. Cerf, R. Filip, J. Fiurasek, F. De Martini
Abstract
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.
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