Generation of frequency tunable polarization entangled photon pairs
Generation of frequency tunable polarization entangled photon pairs
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DOI：
10.1063/1.2183355
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发表时间：
2006-03
影响因子：
3.2
通讯作者：
A. Yabushita;Takayoshi Kobayashi
中科院分区：
文献类型：
--
作者：
A. Yabushita;Takayoshi Kobayashi
利用连续波泵浦光聚焦于具有偏振纠缠的II型非线性晶体，从光学参量系统中产生了具有相关频率的光子对。测量了几种典型结构下频率分辨光子的偏振纠缠度。通过优化条件，偏振纠缠度得到了显著提高。提出了该系统的应用，可作为波分复用量子密钥分配的光源，优化了光子对产生的结构。
Photon pairs with correlated frequencies from an optical parametric system were generated by a continuous wave pump focused on a type-II nonlinear crystal with polarization entanglement. The polarization entanglement of the frequency resolved photons was measured under several typical configurations. By optimizing a condition, the degree of polarization entanglement was improved substantially. We proposed the application of the system, which can be used as a light source of wavelength division multiplexing quantum key distribution, optimizing the configuration of the photon-pair generation.