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原文連結
論文資訊
- 類型：已發表論文
- 日期：2013-05-20
摘要
The sum of the Holevo quantity (that bounds the capacity of 量子 channels to transmit classical 資訊 about an observable) and the 量子 discord (a measure of the 量子ness of correlations of that observable) yields an observable-independent total given by the 量子 mutual 資訊. This split naturally delineates 資訊 about 量子 systems accessible to observers - 資訊 that is redundantly transmitted by the environment - while showing that it is maximized for the quasi-classical pointer observable. Other observables are accessible only via correlations with the pointer observable. We also prove an anti-symmetry property relating accessible 資訊 and discord. It shows that 資訊 becomes objective - accessible to many observers - accessible as 量子 資訊 is relegated to correlations with the global environment, and, therefore, l
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