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arXiv 0901.3216quant-ph
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一种全光纤频率纠缠光子对源

An all fiber source of frequency entangled photon pairs

Xiaoying Li, Lei Yang, Xiaoxin Ma, Liang Cui, Zhe Yu Ou, Daoyin Yu

摘要:

利用Sagnac光纤环中的四波混频,实现了一种全光纤频率纠缠光子对源。通过冷却光纤和匹配在光纤环中反向传播的光子对的偏振模式,特别注意抑制频率纠缠的杂质。对信号光子和闲频光子的符合探测表明,在单个信号光子计数保持不变的情况下,量子干涉以空间拍频的形式存在。当光子对产生率为0.013对/脉冲时,量子干涉包络显示出$(95\pm 2)%$的可见度,接近理论计算极限97.4%

英文摘要:

We present an all fiber source of frequency entangled photon pairs by using four wave mixing in a Sagnac fiber loop. Special care is taken to suppress the impurity of the frequency entanglement by cooling the fiber and by matching the polarization modes of the photon pairs counter-propagating in the fiber loop. Coincidence detection of signal and idler photons, which are created in pair and in different spatial modes of the fiber loop, shows the quantum interference in the form of spatial beating, while the single counts of the individual signal (idler) photons keep constant. When the production rate of photon pairs is about 0.013 pairs/pulse, the envelope of the quantum interference reveals a visibility of $(95\pm 2)%$, which is close to the calculated theoretical limit 97.4%

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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