Optimal cloning of coherent states with a linear amplifier and beam splitters

Abstract

A transformation achieving the optimal symmetric N-to-M cloning of coherent states is presented. Its implementation only requires a phase-insensitive linear amplifier and a network of beam splitters. An experimental demonstration of this continuous-variable cloner should therefore be in the scope of current technology. The link between optimal quantum cloning and optimal amplification of quantum states is also pointed out.

4 pages, 2 figures

References in corpus (1)

• Continuous variable cloning via network of parametric gates

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