Unified Approach to Universal Cloning and Phase-Covariant Cloning

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We analyze the problem of approximate quantum cloning when the quantum state is between two latitudes on the Bloch's sphere. We present an analytical formula for the optimized 1-to-2 cloning. The formula unifies the universal quantum cloning (UQCM) and the phase covariant quantum cloning.

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Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/163312

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0804.4207
 http://arxiv.org/abs/0804.4207

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arXiv