Multiplicativity of maximal p-norms in Werner-Holevo channels for 1 ≤ p
نویسنده
چکیده
Recently, King and Ruskai [1] conjectured that the maximal p–norm of the Werner– Holevo channel is multiplicative for all 1 ≤ p ≤ 2. In this paper we prove this conjecture. Our proof relies on certain convexity and monotonicity properties of the p–norm.
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تاریخ انتشار 2008