Spin correlations of strongly interacting massive fermion pairs as a test of Bell's inequality.
Spin correlations of strongly interacting massive fermion pairs as a test of Bell's inequality.
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DOI：
10.1103/physrevlett.97.150405
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发表时间：
2006-10
影响因子：
8.6
通讯作者：
H. Sakai;T. Saito;T. Ikeda;K. Itoh;T. Kawabata;H. Kuboki;Y. Maeda;N. Matsui;C. Rangacharyulu;M. Sasano;Y. Satou;K. Sekiguchi;K. Suda;A. Tamii;T. Uesaka;K. Yako
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作者：
H. Sakai;T. Saito;T. Ikeda;K. Itoh;T. Kawabata;H. Kuboki;Y. Maeda;N. Matsui;C. Rangacharyulu;M. Sasano;Y. Satou;K. Sekiguchi;K. Suda;A. Tamii;T. Uesaka;K. Yako
我们报告了局部隐变量理论 (Bell-Clauser-Horne-Shimony-Holt) 的首次测试结果，涉及来自短命 (tau;2He+n) 衰变的大量自旋 1/2 强子对的强相互作用。该实验的新颖特征是 (a) 使用效率接近 100% 的“事件就绪”[校正]探测器来准备无偏样本，以及 (b)具有完全 2pi sr 接受度的焦平面旋光计，并且对参考轴进行随机“后选择”，推导出自旋相关函数为 S[exp](pi/4)=2.83+/-0.24stat+/-0.07sys。该结果与非局域量子力学预测一致，并且在置信度为 99.3% 时违反了 |S|<or=2 的 Bell-CHSH 不等式。
We report the results of the first-time test of the local hidden variable theories (Bell-Clauser-Horne-Shimony-Holt) involving strongly interacting pairs of massive spin 1/2 hadrons from the decay of short-lived (tau;2He+n. The novel features of this experiment are (a) the use of an 'event-ready' [corrected] detector of nearly 100% efficiency to prepare an unbiased sample and (b) a focal-plane polarimeter of full 2pi sr acceptance with a random "post selection" of the reference axes. The spin-correlation function is deduced to be S[exp](pi/4)=2.83+/-0.24stat+/-0.07sys. This result is in agreement with nonlocal quantum mechanical prediction and it violates the Bell-CHSH inequality of |S|<or=2 at a confidence level of 99.3%.