Optimal cloning for finite distributions of coherent states
arXiv:quant-ph/0311114 · doi:10.1103/PhysRevA.69.042313
Abstract
We derive optimal cloning limits for finite Gaussian distributions of coherent states, and describe techniques for achieving them. We discuss the relation of these limits to state estimation and the no-cloning limit in teleportation. A qualitatively different cloning limit is derived for a single-quadrature Gaussian quantum cloner.
15 pages RevTeX, 6 figures eps, submitted to PRA