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We give an alternative formulation of the no-cloning theorem that applies toharmonic oscillator coherent states. It says that {\em unknown} single harmonicoscillator coherent states can not be {\em amplified}. Conversely it says that{\em known} harmonic oscillator coherent states can be directly amplifiedthrough an universal unitary process. It is also shown that such a formulationis needed for the consistency of {\em information cloning} proposed by us longago.

A new form of the no-cloning theorem for harmonic oscillator coherent states