标题： 非简并窄带光子对的生成用于混合量子网络 显示英文标题

标题： Generation of nondegenerate narrow-band photon pairs for hybrid quantum network

摘要： 在混合量子网络中，通过光子信道连接两种类型的量子节点需要两个节点及其接口光子之间的中心频率和带宽具有良好的匹配。然而，现有的光子源无法满足这一要求。使用一种新颖的共联双腔策略，我们报告了通过腔增强自发参量下转换生成非简并窄带光子对。信号光子和闲频光子的中心频率和带宽可独立设置，以匹配俘获离子和固态量子存储器。利用此光源，我们实现了信号光子和闲频光子在935 nm处4 MHz和880 nm处5 MHz的带宽和中心频率，归一化谱亮度为4.9/s/MHz/mW。由于能够独立锁定到两个不同的波长，共联双腔普遍适用于由各种量子节点组成的混合量子网络。 显示英文摘要

摘要： In a hybrid quantum network, linking two kinds of quantum nodes through photonic channels requires excellent matching of central frequency and bandwidth between both nodes and their interfacing photons. However, pre-existing photon sources can not fulfill this requirement. Using a novel conjoined double-cavity strategy, we report the generation of nondegenerate narrow-band photon pairs by cavity-enhanced spontaneous parametric down-conversion. The central frequencies and bandwidths of the signal and idler photons are independently set to match with trapped ions and solid-state quantum memories. With this source we achieve the bandwidths and central frequencies of 4 MHz at 935 nm and 5 MHz at 880 nm for the signal and idler photons respectively, with a normalized spectrum brightness of 4.9/s/MHz/mW. Due to the ability of being independently locked to two different wavelenghts, the conjoined double-cavity is universally suitable for hybrid quantum network consisting of various quantum nodes.