Measuring small longitudinal phase shifts via weak measurement amplification

作     者：徐凯 胡晓敏 胡孟军 王宁宁 张超 黄运锋 柳必恒 李传锋 郭光灿 张永生 Kai Xu;Xiao-Min Hu;Meng-Jun Hu;Ning-Ning Wang;Chao Zhang;Yun-Feng Huang;Bi-Heng Liu;Chuan-Feng Li;Guang-Can Guo;Yong-Sheng Zhang

作者机构：CAS Key Laboratory of Quantum InformationUniversity of Science and Technology of ChinaHefei 230026China CAS Center For Excellence in Quantum Information and Quantum PhysicsUniversity of Science and Technology of ChinaHefei 230026China Hefei National LaboratoryUniversity of Science and Technology of ChinaHefei 230088China Beijing Academy of Quantum Information SciencesBeijing 100193China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2024年第33卷第3期

页      面：105-111页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 080402[工学-测试计量技术及仪器] 0835[工学-软件工程] 081002[工学-信号与信息处理] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos. 92065113, 11904357, 62075208, and 12174367) the Innovation Programme for Quantum Science and Technology (Grant No. 2021ZD0301604) the National Key Research and Development Program of China (Grant No. 2021YFE0113100) supported by Beijing Academy of Quantum Information Sciences 

主　　题：weak measurement phase estimation quantum optics 

摘      要：Weak measurement amplification,which is considered as a very promising scheme in precision measurement,has been applied to various small physical quantities *** many physical quantities can be converted into phase signals,it is interesting and important to consider measuring small longitudinal phase shifts by using weak ***,we propose and experimentally demonstrate a novel weak measurement amplification-based small longitudinal phase estimation,which is suitable for polarization *** realize one order of magnitude amplification measurement of a small phase signal directly introduced by a liquid crystal variable retarder and show that it is robust to the imperfection of ***,we analyze the effect of magnification error which is never considered in the previous works,and find the constraint on the *** results may find important applications in high-precision measurements,e.g.,gravitational wave detection.