Highly asymmetric quantum cloning in arbitrary dimension

Details Highly asymmetric quantum cloning in arbitrary dimension Highly asymmetric quantum cloning in arbitrary dimension

2005-05-27

arxiv.org/abs/quant-ph/0505212v1

Quant. Inform. Comp. 5, 583 (2005).

Physics

Quantum Physics

5 pages, 1 figure, RevTeX 4

Scientific paper

We investigate the universal asymmetric cloning of states in a Hilbert space of arbitrary dimension. We derive the class of optimal and fully asymmetric 1->3 cloners, which produce three copies, each having a different fidelity. A simple parametric expression for the maximum achievable cloning fidelity triplets is then provided. As a side-product, we also prove the optimality of the 1->2 asymmetric cloning machines that have been proposed in the literature.

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