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arXiv quant-ph/0609154quant-ph
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远程存储量子比特之间纠缠的鲁棒创建

Robust creation of entanglement between remote memory qubits

Bo Zhao, Zeng-Bing Chen, Yu-Ao Chen, Joerg Schmiedmayer, Jian-Wei Pan

摘要:

在这封信中,我们提出了一种基于原始DLCZ协议[LM]的强大量子中继器架构Duan \textit{et al.},Nature \textbf{414},413(2001)]。该架构基于双光子Hong-Ou-Mandel型干涉,其将长距离稳定性要求放宽约7个数量级,从DLCZ所需的单光子干涉的子波长到光子的相干长度。我们的建议提供了一个令人兴奋的可能性,强大的和现实的长距离量子通信。

英文摘要:

In this Letter we propose a robust quantum repeater architecture building on the original DLCZ protocol [L.M. Duan \textit{et al.}, Nature \textbf{414}, 413 (2001)]. The architecture is based on two-photon Hong-Ou-Mandel-type interference which relaxes the long distance stability requirements by about 7 orders of magnitude, from sub wavelength for the single photon interference required by DLCZ to the coherence length of the photons. Our proposal provides an exciting possibility for robust and realistic long distance quantum communication.

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