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arXiv 0705.1813quant-ph
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熵交换、相干信息与并发

Entropy exchange, coherent information and concurrence

Yang Xiang, Shi-Jie Xiong

摘要:

对于一个简单的模型,我们导出了熵交换和相干信息的解析表达式,并由此得出它们与并发度之间的关系。我们发现,在量子演化中熵交换表现出与并发度行为相似的\textsl{opposite}行为,而相干信息则表现出与并发度非常相似的特征.讨论了这一结果对一般系统的意义。

英文摘要:

For a simple model we derive analytic expressions of entropy exchange and coherent information, from which relations between them and the concurrence are drawn. We find that in the quantum evolution the entropy exchange exhibits behavior \textsl{opposite} to that of the concurrence, whereas the coherent information shows features very similar to those of the concurrence. The meaning of this result for general systems is discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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