Probabilistic cloning and signalling

Details Probabilistic cloning and signalling Probabilistic cloning and signalling

2003-12-04

arxiv.org/abs/quant-ph/0312045v2

Physics

Quantum Physics

Replaced with revised version, 3 pages, latex

Scientific paper

We give a proof of impossibility of probabilistic exact $1\to 2$ cloning of
any three different states of a qubit. The simplicity of the proof is due to
the use of a surprising result of remote state preparation [M.-Yong Ye,
Y.-Sheng Zhang and G.-Can Guo, quant-ph/0307027 (2003)]. The result is extented
to higher dimentional cases for special ensemble of states.

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