高性能单光子探测技术研究进展

Review of Interim Progress of the Project High Performance Single-photon Detection Technology

"高性能单光子探测技术"项目针对光量子信息和量子调控,特别是广域量子通信网络对高性能单光子探测器(SPD)的需求,开展超导纳米线单光子探测器(SNSPD)、超导相变边缘单光子探测器(TES)、InGaAs/InP雪崩光电二极管(APD)以及上转换单光子探测器(UCD)研究。项目于2017年7月立项,项目执行期为5年,共包括4个课题。项目各课题研究工作正在按照计划有序推进,已顺利完成中期既定的任务和目标。SNSPD器件和APD及UCD等单光子探测器件性能已取得部分突破;特别是高效率SNSPD和小型化InGaAs/InP APD方面成果已经达到了国际领先水平。通过和专项其他项目承担单位合作,在应用演示方面取得了量子通信、光量子模拟、量子随机数和贝尔不等式验证等多项重大应用成果。部分器件指标及应用演示成果提前达到了项目结题考核指标。

The project“High-performance single-photon detection technology”is aimed at the demand of photonic quantum information and quantum regulation,especially the demand for high-performance singlephoton detectors(SPD)in wide-area quantum communication networks.Studies are carried out on superconducting nanowire single-photon detector(SNSPD),superconducting transition-edge-sensor(TES)SPD,InGaAs/InP avalanche photodiode(APD)and up-conversion single-photon detector(UCD).The project was launched in July 2017 with a period of 5 years and it includes 4 sub-projects.The research work of each sub-subject is proceeding according to the plan,and the mid-term goals have been successfully completed.Some breakthroughs have been made in the performance of SNSPD,APD and UCD.In particular,the high-efficiency SNSPD and miniaturized InGaAs/InP APD have reached the international leading level.Through the cooperation with researchers in the same program,a number of major application achievements have been made in quantum communication,optical quantum simulation,quantum random numbers,and Bell's inequality verification.Part of the project’s metrics have been achieved in advance in detector performance and application demonstrations.