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Application of quantum Pinsker inequality to quantum communications

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arxiv 2005.04553 v1 pith:ZXHVED7Q submitted 2020-05-10 quant-ph

classification quant-ph
keywords quantumikeharainformationumegakibeengroupsciencecontributions
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Back in the 1960s, based on Wiener's thought, Shikao Ikehara (first student of N.Wiener) encouraged the progress of Hisaharu Umegaki's research from a pure mathematical aspect in order to further develop the research on mathematical methods of quantum information at Tokyo Institute of Technology. Then, in the 1970s, based on the results accomplished by Umegaki Group, Ikehara instructed the author to develop and spread quantum information science as the global information science. While Umegaki Group's results have been evaluated as major achievements in pure mathematics, their contributions to current quantum information science have not been fully discussed. This paper gvies a survey of my talk in the memorial seminar on Ikehara, in which Ikehara and Umegaki Group's contributions to design theory of quantum communication have been introduced with specific examples such as quantum relative entropy and quantum Pinsker inequality.

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  1. Quantum AIXI: Universal Intelligence via Quantum Information

    quant-ph 2025-05 conditional novelty 6.0 of 10

    The paper introduces Quantum AIXI, a channel-based formulation of universal intelligence over quantum environments, and argues that contextuality, measurement back-action, and no-cloning fundamentally limit any such agent.

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