一种用于量子芯片自动化标定的微波开关装置  

A microwave switch for automatic calibration of quantum chips

作　　者：卢保军 杨晖 栾添 LU Baojun;YANG Hui;LUAN Tian(Suzhou Institute of Quantum Science and Technology,Suzhou 215000,China)

机构地区：[1]量子科技长三角产业创新中心,江苏苏州215000

出　　处：《现代电子技术》2023年第20期33-38,共6页Modern Electronics Technique

摘　　要：为实现量子芯片自动化标定,并尽量减少室温噪声带来的影响,文中提出一种用于量子芯片自动化标定的微波开关装置。该装置采用“开关+功分”的架构,可根据上位机下发的参数选择射频通道,进而实现读取线路的自动化切换。功分器芯片用于实现室温测控一体机和矢量网络分析仪的信号复用。实测结果表明,所设计的微波开关装置在4~8 GHz频带范围内,插入损耗小于等于8 dB,幅度一致性小于等于±1 dB,通道一致性小于等于±0.5 dB,通道间隔离度大于等于15 dB,能够满足量子芯片自动化标定系统的使用需求。In order to realize automatic calibration of quantum chips and minimize the impact of room temperature noise,a microwave switch for automatic calibration of quantum chips is proposed.In the device,the structure of“switch&power divider”can be used to select the RF channel according to the parameters sent by the computer,thus realizing the automatic switching of the reading line.The power divider chip is used to realize the signal multiplexing of the room temperature measurement and control integrated machine and the vector network analyzer.The measurement results show that in the 4~8 GHz frequency band,the designed microwave switch has insertion loss≤8 dB,amplitude consistency≤±1 dB,channel consistency≤±0.5 dB,and inter⁃channel isolation≥15 dB,which can meet the usage requirements of the quantum chip automatic calibration system.

关 键 词：量子芯片 自动化标定 微波开关装置 自动化切换 信号复用 矢量网络分析仪 

分 类 号：TN919-34[电子电信—通信与信息系统] TP29[电子电信—信息与通信工程]