基于光子数可分辨探测器的单脉冲光子数检测  

Single pulse photon number detection based on photon number distinguishable detector

作　　者：刘剑 黄典 贺青 王轶文[2] 韦联福 LIU Jian;HUANG Dian;HE Qing;WANG Yiwen;WEI Lianfu(Information Quantum Technology Laboratory, School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China;School of Physical and Technology, Southwest Jiaotong University, Chengdu 610031, China;Photonics Laboratory, School of Science, Donghua University, Shanghai 201620, China)

机构地区：[1]西南交通大学信息科学与技术学院信息量子技术实验室,成都610031 [2]西南交通大学物理科学与技术学院,成都610031 [3]东华大学理学院光子学实验室,上海201620

出　　处：《激光技术》2022年第1期58-63,共6页Laser Technology

基　　金：国家自然科学基金资助项目(11974290)。

摘　　要：为了对未知脉冲所含的光子数进行标定,针对不同光子数的光脉冲在超导环境下,微波动态电感探测器(MKID)作用时,测量系统输出的信号差异性,采用平均区间取值法和迭代法分别进行标定,并进行了理论分析和实验验证。结果表明,MKID能够在低温测量系统中对未知1550nm单脉冲光的光子数进行识别;经过数据处理后得到平均光子数分别为1.98和1.81;其中平均区间取值法标定光子数过程较为简单,迭代法有待继续探索。这一结果对单脉冲光子数检测是有帮助的。In order to calibrate the number of photons contained in the unknown pulse,the signal difference of the system output was measured when the light pulses with different photon numbers were under microwave kinetic inductance detector(MKID)effect in the superconducting environment.The average interval method and iterative method were adopted,and the theoretical analysis and experimental verification were carried out.The results show that,the number of photons of unknown 1550nm single-pulse light in the cryogenic measurement system can be identified by MKID.After data processing,the average photon numbers were 1.98 and 1.81 respectively.Among them,the process of calibrating the number of photons by the average interval method is relatively simple,and the iterative method needs to be further explored.It is helpful for single-pulse photon number detection.

关 键 词：量子光学 光子数可分辨探测器 微波动态电感单光子探测器 光子数标定 超导低温测量系统 

分 类 号：O431.2[机械工程—光学工程]