光通信波段超强光子关联光场的制备  

Preparation of Ultra-Strong Photon Correlation Light Field in Optical Communication Band

作　　者：闫宇 李嘉敏 邱江 刘子骅 韩双萍 郭龑强 秦成兵 肖连团[1,2,3] Yan Yu;Li Jiamin;Qiu Jiang;Liu Zihua;Han Shuangping;Guo Yanqiang;Qin Chengbing;Xiao Liantuan(College of Physics and Optoelectronic Engineering,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China;Key Laboratory of New Sensors and Intelligent Control,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China;Institute of Laser Spectroscopy,State Key Laboratory of Quantum Optics and Quantum Optics Devices,Shanxi University,Taiyuan 030006,Shanxi,China)

机构地区：[1]太原理工大学物理与光电工程学院,山西太原030024 [2]太原理工大学新型传感器与智能控制教育部重点实验室,山西太原030024 [3]山西大学量子光学与光量子器件国家重点实验室激光光谱研究所,山西太原030006

出　　处：《光学学报(网络版)》2024年第6期39-45,共7页Acta Optica Sinica(Online)

基　　金：国家重点研发计划(2022YFA1404201);国家自然科学基金(U23A20380,U22A2091,62222509,62127817,62305240,6191101445);山西省自然科学基金(202203021222107,202203021222104);山西省科技创新团队(202204051001014)

摘　　要：利用超短脉冲激光泵浦光子晶体光纤,在四波混频等非线性效应和光纤色散的作用下,制备了中心波长为1550 nm、光谱宽度为5 nm的光通信波段超强光子关联光场,二阶关联函数g^((2))(0)高达774.2±6.0。通过分析相干光场、热光场和光子关联光场的光子数统计分布以及二阶关联函数g^((2))(0)随平均光子数变化的情况,发现光通信波段超强光子关联光场具有更宽的光子数分布范围和更高的二阶关联函数。研究结果表明,通过调节超短脉冲激光泵浦功率,辐射光场的光子统计特性可以在相干光场、热光场和光子关联光场之间转换。利用所提方法制备的超强光子关联光场为量子精密测量、量子计算等领域的研究提供了新的技术手段。We use an ultra-short pulse laser to pump photonic crystal fiber.Benefiting from nonlinear effects such as fourwave mixing and fiber dispersion,we successfully generate an optical communication band ultra-strong photon correlation light field,characterized by a central wavelength of 1550 nm,a spectral width of 5 nm,and a second-order correlation function g^((2))(0)is up to 774.2±6.0.Through the analysis of the statistical distribution of photon numbers and the secondorder correlation function g^((2))(0)for coherent light field,thermal light field,and photon correlation field as functions of the average photon number,we find that the ultra-strong photon correlation light field in the optical communication band exhibits a wide photon number distribution range and a higher second-order correlation function.The results indicate that by adjusting the pump power of the ultra-short pulse laser,we can transition the photon statistical properties of the emitted light field among coherent light field,thermal light field,and photon-correlated light field.The ultra-strong photon correlation light field generated by this method provides a novel technical approach for advancing research in quantum precision measurement and quantum computing.

关 键 词：量子光学 超强光子关联光场 光通信波段 二阶关联函数 

分 类 号：O431.2[机械工程—光学工程]