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Bright photon-pair source based on a silicon dual-Mach-Zehnder microring

查看全文 作　　者：Chao [1]Wu;YingWen [1]Liu;XiaoWen [2]Gu;XinXin [2]Yu;YueChan [2]Kong;Yang [1]Wang;XiaoGang [1]Qiang;JunJie [1]Wu;ZhiHong [1]Zhu;XueJun [1]Yang;Ping [1,3]Xu 高影响力作者 机构地区：[1]Institute for Quantum Information and State Key Laboratory of High Performance Computing,College of Computer,College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China;[2]Science and Technology on Monolithic Integrated Circuits and Modules Laboratory,Nanjing Electronic Devices Institute,Nanjing 210016,China;[3]National Laboratory of Solid State Microstructures and School of Physics,Nanjing University,Nanjing 210093,China高影响力机构 出　　处：《Science China(Physics,Mechanics & Astronomy)》索引2020年第63卷第2期,共4页高影响力期刊 基　　金：supported by the National Key Research and Development Program of China(Grant No.2017YFA0303700);the National Natural Science Foundation of China(Grant Nos.61632021,11627810,11690031,and 11621091);Open Funds from the State Key Laboratory of High Performance Computing of China(HPCL,National University of Defense Technology) 摘　　要：Single photons and photon pairs are typically generated by spontaneous parametric down conversion or quantum dots;however,spontaneous four-wave mixing(SFWM)in silicon microring resonators[1]is also an appealing source of entangled photons,offering a strong cavity-enhanced nonlinear interactions while maintaining features,such as compact,simple to fabricate,and allowing for thermal tuning.However,silicon ring-resonators usually suffer from a trade-off between providing a high pair generation rate(PGR)and high extraction efficiency.To achieve high PGR,devices are generally operated with the signal and idler photons in the undercoupling regime and pump photons at the critical coupling point,while high extraction rates require the converted photons to be overcoupled.Therefore,the optimal conditions for achieving maximal output photon pair flux are critical coupling for the pump photons and overcoupling for the converted photons[2,3]. 关 键 词：coupling PHOTON converted
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