面向量子通信的时间相位编码集成硅光芯片设计  

Design of Time-Phase Encoded Silicon Photonics Integrated Chip for Quantum Communication

作　　者：陈召远 刘延飞 高旸 郑浩 陈诚 CHEN Zhaoyuan;LIU Yanfei;GAO Yang;ZHENG Hao;CHEN Cheng(Rocket Force University of Engineering,Xi’an 710025,Shaanxi)

机构地区：[1]火箭军工程大学,陕西西安710025

出　　处：《火箭军工程大学学报》2024年第6期99-104,共6页Journal of Rocket Force University of Engineering

基　　金：国家自然科学基金(61701505);陕西省自然科学基金(2022JM-341)。

摘　　要：为满足集成化量子密钥分发系统中降低集成光芯片电光调制器半波电压的需求,采用有限时域差分算法对量子态编码硅光芯片调制器进行了建模和仿真。通过优化调制器的设计参数和调制方式,实现了一种低半波电压的量子密钥分发编码集成光芯片。根据仿真结果进行芯片设计和流片,并对其关键调制性能进行了实验测试。测试结果表明:调制器的半波电压为0.85 V,消光比为36 dB。该调制器能够在极低的半波电压下实现高消光比的量子态制备和比特编码。To effectively reduce half-wave voltage on the integrated photonics chip for inte-grated quantum key distribution(QKD),the quantum state encoding silicon photonic chip was modeled and simulated by finite-difference time-domain(FDTD)algorithm.By optimizing the design parameters and modulation method of the modulator,a low half-wave voltage QKD en-coding integrated photonic chip was developed.Based on the simulation results,the chip was de-signed and fabricated.Furthermore,the key modulation performance of the chip was tested by ex-periments.Results showed that the modulator has a half-wave voltage of 0.85 V and an extinc-tion ratio of 36 dB.The proposed modulator can achieve high extinction ratio quantum state prep-aration and bit encoding at extremely low half-wave voltages.

关 键 词：量子通信 集成光芯片 时间相位编码 量子密钥分发 

分 类 号：TJ410[兵器科学与技术—火炮、自动武器与弹药工程]