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arXiv 1007.5375quant-phphysics.optics
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量子网络的下变频

Frequency down-conversion for a quantum network

Yu Ding, Z. Y. Ou

摘要:

利用强信号场注入的参量下转换过程,我们演示了从泵浦光子到闲频光子的相干频率下转换。与一个常见的误解相反,我们证明了这个过程可以没有量子噪声。通过干涉实验,我们证明了相干性在转换过程中是保持的。这可能导致从高频光子到低频光子的高保真度量子态转移,并连接量子网络中的缺失链路。利用这种光子相干下变频方案,我们提出了一种单光子波分复用的方法。

英文摘要:

By using parametric down-conversion process with a strong signal field injection, we demonstrate coherent frequency down-conversion from a pump photon to an idler photon. Contrary to a common misunderstanding, we show that the process can be free of quantum noise. With an interference experiment, we demonstrate that the coherence is preserved in the conversion process. This may lead to a high fidelity quantum state transfer from high frequency photon to low frequency photon and connects a missing link in a quantum network. With this scheme of coherent frequency down-conversion of photons, we propose a method of single-photon wavelength division multiplexing.

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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