Stronger no-cloning, no-signalling and conservation of quantum information
Quantum Physics
2007-05-23 v1
Abstract
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.
Keywords
Cite
@article{arxiv.quant-ph/0605173,
title = {Stronger no-cloning, no-signalling and conservation of quantum information},
author = {Indranil Chakrabarty and A. K. Pati and Satyabrata Adhikari},
journal= {arXiv preprint arXiv:quant-ph/0605173},
year = {2007}
}