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Pre- and post-selected measurements with coupling-strength-dependent modulation

文献类型：期刊论文

作者Li, Zhaoxue1; Qiu, Jiangdong1; Xie, Linguo1; Luo, Lan1; Liu, Xiong1; Zhang, Zhiyou1,2; Ren, Changliang3; Du, Jinglei1,2
刊名CHINESE PHYSICS B
出版日期2019-03-01
卷号28期号:3页码:6
关键词modulated pre and post-selected measurements Fisher information metric unbalanced input meter
ISSN号1674-1056
DOI10.1088/1674-1056/28/3/030602
通讯作者Zhang, Zhiyou(zhangzhiyou@scu.edu.cn) ; Ren, Changliang(renchangliang@cigit.ac.cn)
英文摘要Pre- and post-selected (PPS) measurement, especially the weak PPS measurement, has been proved to be a useful tool for measuring extremely tiny physical parameters. However, it is difficult to retain both the attainable highest measurement sensitivity and precision with the increase of the parameter to be measured. Here, a modulated PPS measurement scheme based on coupling-strength-dependent modulation is presented with the highest sensitivity and precision retained for an arbitrary coupling strength. This idea is demonstrated by comparing the modulated PPS measurement scheme with the standard PPS measurement scheme in the case of unbalanced input meter. By using the Fisher information metric, we derive the optimal pre- and post-selected states, as well as the optimal coupling-strength-dependent modulation without any restriction on the coupling strength. We also give the specific strategy of performing the modulated PPS measurement scheme, which may promote practical application of this scheme in precision metrology.
资助项目National Natural Science Foundation of China[11674234] ; National Natural Science Foundation of China[11605205] ; Fundamental Research Funds for the Central Universities, China[2012017yjsy143] ; National Key Research and Development Program of China[2017YFA0305200] ; Youth Innovation Promotion Association of Chinese Academy of Sciences (CAS)[2015317] ; Natural Science Foundation of Chongqing, China[cstc2015jcyjA00021] ; Natural Science Foundation of Chongqing, China[cstc2018jcyjAX0656] ; Entrepreneurship and Innovation Support Program for Chongqing Overseas Returnees, China[cx017134] ; Fund of CAS Key Laboratory of Microscale Magnetic Resonance, China ; Fund of CAS Key Laboratory of Quantum Information, China
WOS研究方向Physics
语种英语
WOS记录号WOS:000461454500002
出版者IOP PUBLISHING LTD
源URL[http://119.78.100.138/handle/2HOD01W0/7580]  
专题微纳制造与系统集成研究中心
通讯作者Zhang, Zhiyou; Ren, Changliang
作者单位1.Sichuan Univ, Coll Phys Sci & Technol, Chengdu 610064, Sichuan, Peoples R China
2.Sichuan Univ, Minist Educ, Key Lab High Energy Dens Phys & Technol, Chengdu 610064, Sichuan, Peoples R China
3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式
GB/T 7714		 Li, Zhaoxue,Qiu, Jiangdong,Xie, Linguo,et al. Pre- and post-selected measurements with coupling-strength-dependent modulation[J]. CHINESE PHYSICS B,2019,28(3):6.
APA Li, Zhaoxue.,Qiu, Jiangdong.,Xie, Linguo.,Luo, Lan.,Liu, Xiong.,...&Du, Jinglei.(2019).Pre- and post-selected measurements with coupling-strength-dependent modulation.CHINESE PHYSICS B,28(3),6.
MLA Li, Zhaoxue,et al."Pre- and post-selected measurements with coupling-strength-dependent modulation".CHINESE PHYSICS B 28.3(2019):6.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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