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VIDEO LIBRARY |
International Conference "Functions Theory, Operators Theory and Quantum Information Theory"
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On maximizing of the gap in the Jensen inequality and the capacity of quantum channels E. L. Baitenov |
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Abstract: The Holevo quantity for a given quantum states ensemble equals by definition the gap in Jensen inequality for von Neumann entropy. We prove a theorem on optimality conditions in the general Jensen gap maximization problem where the function is fixed. Then the theorem derived is applied to the one-shot capacity computation for a certain family of non-unital quantum channels. The results are obtained together with S.N.Filippov. |