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

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

2010-05-25

arxiv.org/abs/1005.4542v1

Physics

Quantum Physics

2 pages in Revtex

Scientific paper

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

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