2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/92459Additivity of minimal entropy output is proven for the class of quantum channels $Λ_t (A):=t A^{T}+(1-t)τ(A)$ in the parameter range $-2/(d^2-2)\le t \le 1/(d+1)$.10 pagesQuantum PhysicsAdditivity of minimal entropy output for a class of covariant channelstext