张量积下熵函数的局部极值
Local extrema of entropy functions under tensor products
摘要:
证明了在一定的局域交换性条件下,量子信道的最小冯诺伊曼熵输出是局域可加的。我们还表明,局部极小的2-范数熵函数下张量积封闭,如果一个子空间的维数为2。
英文摘要:
We show that under a certain condition of local commutativity the minimum von-Neumann entropy output of a quantum channel is locally additive. We also show that local minima of the 2-norm entropy functions are closed under tensor products if one of the subspaces has dimension 2.
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