Stronger no-cloning, no-signalling and conservation of quantum information

Details Stronger no-cloning, no-signalling and conservation of quantum information Stronger no-cloning, no-signalling and conservation of quantum information

2006-05-19

arxiv.org/abs/quant-ph/0605173v1

Physics

Quantum Physics

Scientific paper

It is known that the stronger no-cloning theorem and the no-deleting theorem taken together provide the permanence property of quantum information. Also, it is known that the violation of the no-deletion theorem would imply signalling. Here, we show that the violation of the stronger no-cloning theorem could lead to signalling. Furthermore, we prove the stronger no-cloning theorem from the conservation of quantum information. These observations imply that the permanence property of quantum information is connected to the no-signalling and the conservation of quantum information.

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