Hybrid waveguide scheme for silicon-based quantum photonic circuits with quantum light sources

被引：6
|
作者：
Yu, Lingjie [1 ]
Yuan, Chenzhi [1 ,2 ]
Qi, Renduo [1 ]
Huang, Yidong [1 ,3 ,4 ]
Zhang, Wei [1 ,3 ,4 ]
机构：
[1] Tsinghua Univ, Elect Engn Dept, Beijing Innovat Ctr Future Chips, Beijing Natl Res Ctr Informat Sci & Technol BNRis, Beijing 100084, Peoples R China
[2] Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Peoples R China
[3] Frontier Sci Ctr Quantum Informat, Beijing 100084, Peoples R China
[4] Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China
来源：
PHOTONICS RESEARCH | 2020年 / 8卷 / 03期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
GENERATION;
D O I：
10.1364/PRJ.376805
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose a hybrid silicon waveguide scheme to avoid the impact of noise photons induced by pump lights in application scenarios of quantum photonic circuits with quantum light sources. The scheme is composed of strip waveguide and shallow-ridge waveguide structures. It utilizes the difference of biphoton spectra generated by spontaneous four-wave mixing (SFWM) in these two waveguides. By proper pumping setting and signal/idler wavelength selection, the generation of desired photon pairs is confined in the strip waveguide. The impact of noise photons generated by SFWM in the shallow-ridge waveguide can be avoided. Hence, the shallow-ridge waveguide could be used to realize various linear operation devices for pump light and quantum state manipulations. The feasibility of this scheme is verified by theoretical analysis and a primary experiment. Two applications are proposed and analyzed, showing its great potential in silicon-based quantum photonic circuits. (C) 2020 Chinese Laser Press
引用
收藏
页码：235 / 245
页数：11
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