摘要
高精度的干涉仪在精密测量领域有着非常重要的作用。相位估计的不确定度通常用来判定一个干涉仪测量的精密程度,相位估计的不确定度越小意味着相位灵敏度越高。在理论上提出了由光学参量放大器和线性光学分束器(BS)组成的非线性干涉仪。基于热^(85)Rb原子系综四波混频(FWM)过程的光学参量放大器用来实现干涉仪中光束的合成与分离。BS作为反馈控制器,通过控制器件的反射率,来控制FWM过程的出射光返回到入射光端口的比例。与传统干涉仪的相位灵敏度相比,通过理论计算证明了基于光学参量放大器反馈的非线性干涉仪相位灵敏度更高。本研究结果在量子精密测量领域有着潜在的研究价值。
High-precision interferometers play a critical role in the field of metrology.The uncertainty of phase estimation can be used to evaluate the precision of an interferometer.The lower the uncertainty of phase estimation,the higher the phase sensitivity.We theoretically propose a nonlinear interferometer composed of an optical parametric amplifier and a linear optical beam splitter(BS).An optical parametric amplifier based on the hot rubidium-85 atomic ensemble four-wave mixing(FWM)process is used to combine and separate the beams in the interferometer.As a feedback controller,the BS controls the proportion of the output light returning to the input light port in the FWM process by controlling the reflectivity of the device.Through theoretical calculations,it is proved that the phase sensitivity of a nonlinear interferometer based on optical parametric amplifier feedback is enhanced compared with that of traditional interferometers.Our research results are expected to have potential applications in the field of quantum metrology.
作者
符婧
王绪彤
刘胜帅
荆杰泰
Fu Jing;Wang Xutong;Liu Shengshuai;Jing Jietai(State Key Laboratory of Precision Spectroscopy,Joint Institute of Advanced Science and Technology,School of Physics and Electronic Science,East China Normal University,Shanghai 200062,China;CAS Center for Excellence in Ultra-Intense Laser Science,Shanghai 201800,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,Shanxi,China;National Laboratory of Solid State Microstructures,Nanjing University,Nanjing 210093,Jiangsu,China;Chongqing Key Laboratory of Precision Optics,Chongqing Institute of East China Normal University,Chongqing 401120,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2023年第11期266-270,共5页
Laser & Optoelectronics Progress
基金
国家自然科学基金(12225404,11874155,91436211,11374104,12174110)
上海市教育委员会创新计划(2021-01-07-00-08-E00100)
上海市学术研究带头人项目(22XD1400700)
上海市科学技术委员会基础研究项目(20JC1416100)
上海市自然科学基金(17ZR1442900)
闵行领军人才(201971)
上海市青年科技英才扬帆计划(21YF1410800)
重庆市自然科学基金(CSTB2022NSCQ-MSX0893)
上海市政科学与技术重大项目(2019SHZDZX01)
高等学校学科创新引智计划(B12024)。
关键词
量子精密测量
非线性干涉仪
光学参量放大器
四波混频
反馈控制
quantum metrology
nonlinear interferometer
optical parametric amplifier
four-wave mixing
feedback control