Optimal multicopy asymmetric Gaussian cloning of coherent states
arXiv:quant-ph/0610205 · doi:10.1103/PhysRevA.75.052335
Abstract
We investigate the asymmetric Gaussian cloning of coherent states which produces M copies from N input replicas, such that the fidelity of all copies may be different. We show that the optimal asymmetric Gaussian cloning can be performed with a single phase-insensitive amplifier and an array of beam splitters. We obtain a simple analytical expression characterizing the set of optimal asymmetric Gaussian cloning machines.
7 pages, 2 figures, RevTeX4
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