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从量子纠缠到量子通讯
source link: https://zhuanlan.zhihu.com/p/34341866
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什么是信息？信息的一个比较被认可的定义是1948年数学家香农在论文中提出的：信息是用来消除随机不定性的东西。比如，盒子里有一个硬币，它可以是正面向上，也可以是反面向上，在打开前我们是不确定的。然后我们打…
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