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arXiv 1502.01830quant-ph
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多体非定域性的熵检验与状态无关上下文性

Entropic tests of multipartite nonlocality and state-independent contextuality

Sadegh Raeisi, Pawel Kurzynski, Dagomir Kaszlikowski

摘要:

我们介绍了一个多部扩展的信息论距离首次介绍在[自然341,119(1989)]。我们使用这个新的距离来推导三个和任意偶数个量子比特的多体非定域性的熵测试以及与状态无关的上下文测试。此外,我们重新推导了Cabello [Phys. Rev. Lett. 101,210401(2008)]。这表明,信息论距离的方法,多部非局部性和状态独立的上下文可以提供一个更一般的处理非经典的相关性比正统的方法的基础上关联函数。

英文摘要:

We introduce a multipartite extension of an information-theoretic distance first introduced in [Nature 341, 119 (1989)]. We use this new distance to derive entropic tests of multipartite nonlocality for three and for an arbitrary even number of qubits as well as a test of state-independent contextuality. In addition, we re-derive the tripartite Mermin inequality and a state-independent non-contextuality inequality by Cabello [Phys. Rev. Lett. 101, 210401 (2008)]. This suggests that the information-theoretic distance approach to multipartite nonlocality and state-independent contextuality can provide a more general treatment of nonclassical correlations than the orthodox approach based on correlation functions.

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