Additivity of minimal entropy output for a class of covariant channels
M. Fannes, B. Haegeman, M. Mosonyi, D. Vanpeteghem
Abstract
Additivity of minimal entropy output is proven for the class of quantum channels Λt (A):=t AT+(1-t)τ(A) in the parameter range -2/(d2-2) t 1/(d+1).
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