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arXiv quant-ph/9712027quant-ph
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噪声信道中量子通信和最大纠缠原子对的产生

Quantum communication and the creation of maximally entangled pairs of atoms over a noisy channel

H. -J. Briegel, W. Dür, S. J. van Enk, J. I. Cirac, P. Zoller

摘要:

我们展示了如何通过一个普通的、有噪声的通道(如标准光纤)发送光子,在空间距离较远的原子之间(每个原子都在一个高Q光学腔内)创建最大纠缠EPR对。在每个腔中使用少量辅助原子的误差校正方案有效地消除了光吸收和其他传输误差。这实现了“吸收自由通道”。使用无吸收通道的级联协议允许在远大于通道相干长度的距离上与单个量子比特进行量子通信。

英文摘要:

We show how to create maximally entangled EPR pairs between spatially distant atoms, each of them inside a high-Q optical cavity, by sending photons through a general, noisy channel, such as a standard optical fiber. An error correction scheme that uses few auxiliary atoms in each cavity effectively eliminates photoabsorption and other transmission errors. This realizes the `absorption free channel.' A concatenation protocol using the absorption free channel allows for quantum communication with single qubits over distances much larger than the coherence length of the channel.

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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