【摘 要】
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Due to some ambiguity in the definition of mutual Tsallis entropy in classical probability theory,its generalization to quantum theory is discussed.We defin
【机 构】
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Nicolaus Copernicus University, Poland
【出 处】
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The XXIX International Colloquium on Group-Theoretical Metho
论文部分内容阅读
Due to some ambiguity in the definition of mutual Tsallis entropy in classical probability theory,its generalization to quantum theory is discussed.We define a $q$-discord originating from the $q$-expectation value of mutual Tsallis entropy.$q$-discords for two-qubit Werner and isotropic states are calculated and it is shown that both are positive,at least for states under investigation,for all $q>0$.Finally,an analytical expression for $q$-discord of certain family of two-qubit X states is presented.
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