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arXiv quant-ph/0508120quant-ph
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广义非定域关联的纠缠交换

Entanglement swapping for generalized non-local correlations

Tony Short, Sandu Popescu, Nicolas Gisin

摘要:

我们考虑一组黑盒子的纠缠交换的模拟,这些黑盒子具有与相对论一致的最一般的非定域关联(包括比量子理论中任何可达到的关联都强的关联)。在尝试纳入这一现象,我们考虑扩大对象的空间,不仅包括相关的盒子,但“耦合器”,这是一个类似的盒子的测量纠缠本征态在量子理论。令人惊讶的是,我们发现,没有耦合器存在两个二进制输入/二进制输出盒,因此,没有类似的纠缠交换这样的盒子。

英文摘要:

We consider an analogue of entanglement-swapping for a set of black boxes with the most general non-local correlations consistent with relativity (including correlations which are stronger than any attainable in quantum theory). In an attempt to incorporate this phenomenon, we consider expanding the space of objects to include not only correlated boxes, but `couplers', which are an analogue for boxes of measurements with entangled eigenstates in quantum theory. Surprisingly, we find that no couplers exist for two binary-input/binary-output boxes, and hence that there is no analogue of entanglement-swapping for such boxes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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