Fiber-based source of photon pairs at telecom band with high temporal coherence and brightness for quantum information processing.
Fiber-based source of photon pairs at telecom band with high temporal coherence and brightness for quantum information processing.
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DOI：
10.1364/ol.33.000593
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发表时间：
2008-01
期刊：
影响因子：
3.6
通讯作者：
Xiaoying Li;Lei Yang;L. Cui;Z. Ou;Daoyin Yu
中科院分区：
文献类型：
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作者：
Xiaoying Li;Lei Yang;L. Cui;Z. Ou;Daoyin Yu
我们用4ps的脉冲串泵浦300 m色散位移光纤，在1550 nm通信波段实现了明亮的相关光子对脉冲光源。我们通过测量单个信号（闲频）光子的二阶强度相关函数g（2）来研究光源的相干特性。初步的红-欧-曼德尔型双光子干涉实验与两个这样的源证实了高的时间和空间相干性的源。该光源适用于量子信息处理中对独立光源的多光子量子干涉。
We experimentally demonstrate a bright pulsed source of correlated photon pairs at the 1550 nm telecom band by pumping 300 m dispersion-shifted fiber with a 4 ps pulse train. We investigate the coherence property of the source by measuring the second-order intensity correlation function g(2) of individual signal (idler) photons. A preliminary Hong-Ou-Mandel-type two-photon interference experiment with two such sources confirms the high temporal and spatial coherence of the source. The source is suitable for multiphoton quantum interference of independent sources, which is required in quantum information processing.