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arXiv quant-ph/9707042quant-ph
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超过10公里的量子关联的实验演示

Experimental demonstration of quantum correlations over more than 10 km

W. Tittel, J. Brendel, B. Gisin, T. Herzog, H. Zbinden, N. Gisin

摘要:

能量和时间纠缠的光子在1310 nm的波长产生的KNbO3晶体中的参数下变频,并发送到全光纤干涉仪使用电信光纤网络。这两个干涉仪的贝尔不等式的弗兰森型测试位于彼此相距10.9公里。获得了高达81.6%的双光子条纹亮度。这些强的非定域关联支持了量子力学的非定域预测,并提供了光子之间的纠缠可以在长距离上保持的证据。

英文摘要:

Energy and time entangled photons at a wavelength of 1310 nm are produced by parametric downconversion in a KNbO3 crystal and are sent into all-fiber interferometers using a telecom fiber network. The two interferometers of this Franson-type test of the Bell-inequality are located 10.9 km apart from one another. Two-photon fringe visibilities of up to 81.6 % are obtained. These strong nonlocal correlations support the nonlocal predictions of quantum mechanics and provide evidence that entanglement between photons can be maintained over long distances.

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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