Generalizations of Pauli channels

Details Generalizations of Pauli channels Generalizations of Pauli channels

2008-12-14

arxiv.org/abs/0812.2668v1

Acta Math. Hungar 124(2009), 165-177.

Physics

Mathematical Physics

Scientific paper

The Pauli channel acting on 2 x 2 matrices is generalized to an n-level quantum system. When the full matrix algebra M is decomposed into pairwise complementary subalgebras, then trace-preserving linear mappings from M to M are constructed such that the restriction to the subalgebras are depolarizing channels. The result is the necessary and sufficient condition of complete positivity. The main examples appear on bipartite systems

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