Unified Approach to Universal Cloning and Phase-Covariant Cloning

Details Unified Approach to Universal Cloning and Phase-Covariant Cloning Unified Approach to Universal Cloning and Phase-Covariant Cloning

2008-04-26

arxiv.org/abs/0804.4207v2

Physics

Quantum Physics

Scientific paper

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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