Non-Additivity of the Entanglement of Purification (Beyond Reasonable Doubt)
Non-Additivity of the Entanglement of Purification (Beyond Reasonable Doubt)
复制标题
纯化纠缠的非可加性（排除合理怀疑）
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
A. Winter
中科院分区：
文献类型：
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作者：
Jianxin Chen;A. Winter
我们证明了正则化纠缠的纯化和熵之间的差异，作为状态的函数的凸性。这是证明了一个新的渐近协议，准备一个国家从预共享纠缠和本地操作。我们继续采用这种凸性性质的（单拷贝）纠缠的可加性的研究纯化：使用两个量子比特的维尔纳态的数值结果，我们发现强有力的证据，纯化的纠缠是不同的，从它的正则化，因此，纠缠的纯化是不加性的。
We demonstrate the convexity of the difference between the regularized entanglement of purification and the entropy, as a function of the state. This is proved by means of a new asymptotic protocol to prepare a state from pre-shared entanglement and by local operations only. We go on to employ this convexity property in an investigation of the additivity of the (single-copy) entanglement of purification: using numerical results for two-qubit Werner states we find strong evidence that the entanglement of purification is different from its regularization, hence that entanglement of purification is not additive.
影响因子：
2.4
作者：
Hayden, Patrick;Winter, Andreas
通讯作者：
Winter, Andreas