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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク entropy exchange ： ウィキペディア英語版 entropy exchange In quantum mechanics, and especially quantum information processing, the entropy exchange of a quantum operation $\backslash phi\; \backslash ,$ acting on the density matrix $\backslash rho\_Q\; \backslash ,$ of a system $Q\; \backslash ,$ is defined as :$S(\backslash rho,\backslash phi)\; \backslash equiv\; S()\; =\; S(\backslash rho\_\text{'})$ where $S(\backslash rho\_\text{'})\; \backslash ,$ is the von Neumann entropy of the system $Q\; \backslash ,$ and a fictitious purifying auxiliary system $R\; \backslash ,$ after they are operated on by $\backslash phi\; \backslash ,$. Here, :$\backslash rho\_\; =\; |QR\backslash rangle\backslash langle\; QR|\; \backslash quad$ , :$\backslash mathrm\_R()\; =\; \backslash rho\_Q\; \backslash quad$ , and :$\backslash rho\_\text{'}\; =\; \backslash phi()\; \backslash quad$ . ==References== * Nielsen, Michael A. and Isaac L. Chuang (2000). ''Quantum Computation and Quantum Information'', Cambridge University Press, ISBN 0-521-63503-9 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「entropy exchange」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.