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arXiv quant-ph/0301118quant-ph
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纠缠浓度的实验实现和量子中继器

Experimental Realization of Entanglement Concentration and A Quantum Repeater

Zhi Zhao, Tao Yang, Yu-Ao Chen, An-Ning Zhang, Jian-Wei Pan

摘要:

我们报道了利用脉冲参量下转换产生的两个偏振纠缠光子对实现纠缠集中的实验。与此同时,我们的设置还提供了量子中继器的原理证明。我们的程序的质量进行验证,观察违反贝尔不等式超过5个标准差。实验中获得的高精度表明,该方法可以满足量子中继器多级实现中对可容忍误码率的要求,从而为远距离量子通信提供了一个实用的工具箱。

英文摘要:

We report an experimental realization of entanglement concentration using two polarization-entangled photon pairs produced by pulsed parametric down-conversion. In the meantime, our setup also provides a proof-in-principle demonstration of a quantum repeater. The quality of our procedure is verified by observing a violation of Bell's inequality by more than 5 standard deviations. The high experimental accuracy achieved in the experiment implies that the requirement of tolerable error rate in multi-stage realization of quantum repeaters can be fulfilled, hence providing a practical toolbox for quantum communication over large 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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