Tailored Photon-Pair Generation in Optical Fibers
Tailored Photon-Pair Generation in Optical Fibers
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DOI：
10.1103/physrevlett.102.123603
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发表时间：
2009-03-27
影响因子：
8.6
通讯作者：
Walmsley, Ian A.
中科院分区：
文献类型：
--
作者：
Cohen, Offir;Lundeen, Jeff S.;Walmsley, Ian A.
我们通过实验控制在微结构光纤中通过自发四波混频产生的光子对的光谱结构。通过制造具有设计色散的光纤，人们可以操纵光子的波长、联合光谱，从而操纵纠缠。作为一个例子，我们产生没有光谱相关性的光子对，允许直接预示纯态波包中的单光子，而无需过滤。我们实现了（85.9 +/- 1.6）%的实验纯度，而理论分析和初步测试表明，94.5%的纯度是可能的，具有更长的纤维。
We experimentally control the spectral structure of photon pairs created via spontaneous four-wave mixing in microstructured fibers. By fabricating fibers with designed dispersion, one can manipulate the photons' wavelengths, joint spectrum, and, thus, entanglement. As an example, we produce photon pairs with no spectral correlations, allowing direct heralding of single photons in pure-state wave packets without filtering. We achieve an experimental purity of (85.9 +/- 1.6)%, while theoretical analysis and preliminary tests suggest that 94.5% purity is possible with a much longer fiber.