No Signalling and Probabilistic Quantum Cloning

Details No Signalling and Probabilistic Quantum Cloning No Signalling and Probabilistic Quantum Cloning

1999-05-07

arxiv.org/abs/quant-ph/9905024v1

Phys.Lett. A259 (1999) 331-333

Physics

Quantum Physics

5 pages

Scientific paper

10.1016/S0375-9601(99)00448-X

We show that the condition of no faster-than-light signalling restricts the
number of quantum states that can be cloned in a given Hilbert space. This
condition leads to the constraints on a probabilistic quantum cloning machine
(PQCM) recently found by Duan and Guo.

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