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A Note on Entropies for Compound Systems

机译:关于复合系统熵的一个注记

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摘要

In quantum compound systems, joint (or compound) states usually do not exist. The so-called Ohya compound state was defined by using the von Neumann-Schatten decomposition of an input state and a quantum communication channel. Quantum mutual entropy was introduced by using quantum relative entropy between the Ohya compound state and the trivial (product) compound state on the compound (input and output) system. One of the remarkable results related to state entanglement is the Jamiolkowski isomorphism. In this paper, we use the Jamiolkowski isomorphism for the construction of Ohya compound state and we discuss the existence of a completely positive map between compound entangled states and the Ohya compound states. The efficiency of information transmission is investigated by using the mean entropy and the mean mutual entropy of a connected channel.
机译:在量子化合物系统中,通常不存在联合(或化合物)态。所谓的Ohya复合态是通过使用输入态和量子通信通道的冯·诺依曼-沙滕分解来定义的。利用在化合物(输入和输出)系统上的Ohya复合态与平凡(乘积)复合态之间的量子相对熵,引入了量子互熵。与状态纠缠有关的显着结果之一是Jamiolkowski同构。在本文中,我们将Jamiolkowski同构用于Ohya复合态的构建,并讨论了复合纠缠态与Ohya复合态之间完全正图的存在。通过使用连接通道的平均熵和平均互熵来研究信息传输的效率。

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  • 来源
    《Open Systems & Information Dynamics》 |2015年第2期|1550010.1-1550010.21|共21页
  • 作者

    Noboru Watanabe;

  • 作者单位

    Department of Information Sciences Tokyo University of Science Noda City, Chiba 278-8510, Japan;

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  • 正文语种 eng
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