Quantum Channels With Polytopic Images and Image Additivity
نویسندگان
چکیده
منابع مشابه
Some new additivity results on quantum channels
In this paper we introduce a lemma. This lemma states that for a unitary covariant channel Ψ and a channel M such that M(ρ0) is of rank one for some state ρ0 ∈ S(H) the additivity of the minimal output entropy of Ψ implies that of Ψ ◦M , and the multiplicativity of the maximal output p-norm of Ψ, that of Ψ ◦M . For the product channel of the depolarising channel and an arbitrary channel the add...
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ژورنال
عنوان ژورنال: IEEE Transactions on Information Theory
سال: 2015
ISSN: 0018-9448,1557-9654
DOI: 10.1109/tit.2015.2401397