Quantum Cloning by Cellular Automata [PDF]
G. M. D'Ariano, C. Macchiavello, M. RossiWe introduce a quantum cellular automaton that achieves approximate phase-covariant cloning of qubits. The automaton is optimized for 1-to-2N economical cloning. The use of the automaton for cloning allows to exploit different foliations for improving the performance with given resources.View original: http://arxiv.org/abs/1212.4704
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