arXiv quant-ph/98050341998-05quant-ph

Bell不等式的最大破坏与原子级联光子

Maximal violation of Bell's inequality and atomic cascade photons

M. Ardehali

备注：: LaTeX file, 18 pages, no figures. The paper has been significantly modified. It is shown that the in the case of ideal experiments, the inequality derived in this paper is equivalent to Bell's original inequality of 1965 which, as is well known, is violated by a factor of 1.5. The crucial point is that even in the case of real experiments where polarizers and detectors are non-ideal, the present inequality is violated by a factor of 1.5, whereas previous inequalities such as CHSH inequality of 1969 and CH inequality of 1974 are violated by a factor of $\sqrt 2$

摘要：

由局部实在论和一个补充假设导出了一个相关不等式。在实际实验中，这个不等式的违反因子为1.5，而以前的不等式，如1969年的Clauser-Horne-Shimony-Holt不等式和1974年的Clauser-Horne不等式的违反因子为$\sqrt 2$。因此，违反这个不等式的幅度大约比违反以前的不等式的幅度大20.7%。此外，本不等式可以非常简单地用于检验局部性，因为它只需要测量两个检测概率。相比之下，Clauser-Horne不等式需要测量五个检测概率。

英文摘要：

A correlation inequality is derived from local realism and a supplementary assumption. This inequality is violated by a factor of 1.5 in the case of real experiments, whereas previous inequalities such as Clauser-Horne-Shimony-Holt inequality of 1969 and Clauser-Horne inequality of 1974 are violated by a factor of $\sqrt 2$. Thus the magnitude of violation of this inequality is approximately 20.7% larger than the magnitude of violation of previous inequalities. Moreover, the present inequality can be used to test locality very simply because it requires the measurements of only two detection probabilities. In contrast, Clauser-Horne inequality requires the measurements of five detection probabilities.

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摘要：

英文摘要：

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