research10.1016/S0375-9601(00)00281-4

Probabilistic exact cloning and probabilistic no-signalling

Abstract

We show that non-local resources cannot be used for probabilistic signalling even if one can produce exact clones with the help of a probabilistic quantum cloning machine (PQCM). We show that PQCM cannot help to distinguish two statistical mixtures at a remote location. Thus quantum theory rules out the possibility of sending superluminal signals not only deterministically but also probabilistically. We give a bound on the success probability of producing multiple clones in an entangled system.Comment: Latex file, 6 pages, minor correction

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quant-ph/9908017oai:arXiv.org:quant-ph/9908017
Last time updated on April 13, 2012View original full text link

This paper was published in arXiv.org e-Print Archive.

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