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arXiv 0901.3253quant-ph
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二、三比特态的非齐次Bell型不等式

Non-homogeneous Bell-type Inequalities for Two- and Three-qubit States

Mingjun Shi, Changliang Ren, Jiangfeng Du

摘要:

本文给出了一种构造非齐次二比特和三比特Bell型不等式的系统方法。当从齐次双量子比特CHSH多项式中减去类投影项时,得到了非齐次不等式,并且当减去的项足够大时,最大量子力学破坏渐近等于一个常数.在三量子比特系统的情况下,我们发现文献中提出的大多数重要的三量子比特不等式都可以在我们的框架下得到恢复。我们还讨论了这些不等式在无环空Bell测试中的表现,并得到了相应的检测效率阈值。

英文摘要:

A systematic approach is presented to construct non-homogeneous two- and three-qubit Bell-type inequalities. When projector-like terms are subtracted from homogeneous two-qubit CHSH polynomial, non-homogeneous inequalities are attained and the maximal quantum mechanical violation asymptotically equals a constant with the subtracted terms becoming sufficiently large. In the case of three-qubit system, it is found that most significant three-qubit inequalities presented in literature can be recovered in our framework. We aslo discuss the behavior of such inequalities in the loophole-free Bell test and obtain corresponding thresholds of detection efficiency.

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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