693 citations · 2.9k across the 45 of their papers we have counts for
1 paper · 2 filters
D. Bruss, M. Cinchetti, G. M. D'Ariano +1
We consider an N -> M quantum cloning transformation acting on pure two-level states lying on the equator of the Bloch sphere. An upper bound for its fidelity is presented, by esta…