Optimal multicopy asymmetric Gaussian cloning of coherent states

Details Optimal multicopy asymmetric Gaussian cloning of coherent states Optimal multicopy asymmetric Gaussian cloning of coherent states

2006-10-24

arxiv.org/abs/quant-ph/0610205v1

Phys. Rev. A 75, 052335 (2007).

Physics

Quantum Physics

7 pages, 2 figures, RevTeX4

Scientific paper

10.1103/PhysRevA.75.052335

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.

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