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Strong converse to the quantum channel coding theorem

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2 Author(s)
Ogawa, T. ; Graduate Sch. of Inf. Syst., Univ. of Electro-Commun., Chofu, Japan ; Nagaoka, H.

A lower bound on the probability of decoding error for a quantum communication channel is presented, from which the strong converse to the quantum channel coding theorem is immediately shown. The results and their derivations are mostly straightforward extensions of the classical counterparts which were established by Arimoto (1973), except that more careful treatment is necessary here due to the noncommutativity of operators

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Information Theory, IEEE Transactions on  (Volume:45 ,  Issue: 7 )