Tuesday, July 06, 2004

Common origin of no-cloning and no-deleting principles - Conservation of Information

Authors: Michal Horodecki, Ryszard Horodecki, Aditi Sen De, Ujjwal Sen
Comments: This paper is dedicated to Asher Peres on the occasion of
his seventieth birthday\

We discuss the role of the notion of information in the
description of physical reality. We consider theories
for which the dynamics is linear with respect to stochastic mixing.
We point out that the no-cloning and no-deleting principles emerge
in any such theory, if law of conservation of information is
valid, and two copies contain more information than one copy.
We then describe the quantum case from this point of view.
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