Broadband quasi-phase matching in a MgO:PPLN thin film

查看全文 作　　者：LICHENG [1]GE;YUPING [1]CHEN;HAOWEI [1]JIANG;GUANGZHEN [1]LI;BING [1]ZHU;YI'AN [1]LIU;XIANFENG [1]CHEN

机构地区：[1]State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China

出　　处：《Photonics Research》索引2018年第6卷第10期,共5页

基　　金：National Key R&D Program of China(2017YFA0303700);National Natural Science Foundation of China(NSFC)(11574208) 摘　　要：Future quantum information networks operated on telecom channels require qubit transfer between different wavelengths while preserving quantum coherence and entanglement. Qubit transfer is a nonlinear optical process,but currently the types of atoms used for quantum information processing and storage are limited by the narrow bandwidth of upconversion available. Here we present the first experimental demonstration of broadband and high-efficiency quasi-phase matching second-harmonic generation(SHG) in a chip-scale periodically poled lithium niobate thin film. We achieve a large bandwidth of up to 2 THz for SHG by satisfying quasi-phase matching and group-velocity matching simultaneously. Furthermore, by changing the film thickness, the central wavelength of the quasi-phase matching SHG bandwidth can be modulated from 2.70 μm to 1.44 μm. The reconfigurable quasi-phase matching lithium niobate thin film provides a significant on-chip integrated platform for photonics and quantum optics. 关键词：电信信道信息网络通讯技术发展现状

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Broadband quasi-phase matching in a MgO:PPLN thin film

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