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Experimental observation of an anomalous weak value without post-selection

文献类型：期刊论文

作者Yang, Mu2,3; Li, Qiang2,3; Liu, Zheng-Hao2,3; Hao, Ze-Yan2,3; Ren, Chang-Liang1; Xu, Jin-Shi2,3; Li, Chuan-Feng2,3; Guo, Guang-Can2,3
刊名PHOTONICS RESEARCH
出版日期2020-09-01
卷号8期号:9页码:1468-1474
ISSN号2327-9125
DOI10.1364/PRJ.393480
通讯作者Ren, Chang-Liang(renchangliang@cigit.ac.cn)
英文摘要Weak measurement has been shown to play important roles in the investigation of both fundamental and practical problems. Anomalous weak values are generally believed to be observed only when post-selection is performed, i.e., only a particular subset of the data is considered. Here, we experimentally demonstrate that an anomalous weak value can be obtained without discarding any data by performing a sequential weak measurement on a single-qubit system. By controlling the blazing density of the hologram on a spatial light modulator, the measurement strength can be conveniently controlled. Such an anomalous phenomenon disappears when the measurement strength of the first observable becomes strong. Moreover, we find that the anomalous weak value cannot be observed without post-selection when the sequential measurement is performed on each of the components of a two-qubit system, which confirms that the observed anomalous weak value is based on sequential weak measurement of two noncommutative operators. (C) 2020 Chinese Laser Press
资助项目National Key Research and Development Program of China[2017YFA0305200] ; National Key Research and Development Program of China[2016YFA0302700] ; National Key Research and Development Program of China[2017YFA0304100] ; National Natural Science Foundation of China[11774335] ; National Natural Science Foundation of China[61327901] ; National Natural Science Foundation of China[61490711] ; National Natural Science Foundation of China[61725504] ; National Natural Science Foundation of China[11821404] ; National Natural Science Foundation of China[U19A2075] ; National Natural Science Foundation of China[11605205] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2015317] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS)[QYZDY-SSW-SLH003] ; Science Foundation of the CAS[ZDRW-XH-2019-1] ; Anhui Initiative in Quantum Information Technologies[AHY060300] ; Anhui Initiative in Quantum Information Technologies[AHY020100] ; Fundamental Research Funds for the Central Universities[WK2030380017] ; Fundamental Research Funds for the Central Universities[WK2470000026] ; Natural Science Foundation of Chongqing[cstc2015jcyjA00021] ; Natural Science Foundation of Chongqing[cstc2018jcyjAX0656] ; Fund of CAS Key Laboratory of Microscale Magnetic Resonance ; Fund of CAS Key Laboratory of Quantum Information ; Entrepreneurship and Innovation Support Program for Chongqing Overseas Returnees[cx2017134] ; Entrepreneurship and Innovation Support Program for Chongqing Overseas Returnees[cx2018040]
WOS研究方向Optics
语种英语
WOS记录号WOS:000565856300013
出版者OPTICAL SOC AMER
源URL[http://119.78.100.138/handle/2HOD01W0/11711]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Ren, Chang-Liang
作者单位1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Ctr Nano Fabricat & Syst Integrat, Chongqing 400714, Peoples R China
2.Univ Sci & Technol China, CAS Ctr Excellence Quantum Informat & Quantum Phy, Hefei 230026, Peoples R China
3.Univ Sci & Technol China, CAS Key Lab Quantum Informat, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Mu,Li, Qiang,Liu, Zheng-Hao,et al. Experimental observation of an anomalous weak value without post-selection[J]. PHOTONICS RESEARCH,2020,8(9):1468-1474.
APA Yang, Mu.,Li, Qiang.,Liu, Zheng-Hao.,Hao, Ze-Yan.,Ren, Chang-Liang.,...&Guo, Guang-Can.(2020).Experimental observation of an anomalous weak value without post-selection.PHOTONICS RESEARCH,8(9),1468-1474.
MLA Yang, Mu,et al."Experimental observation of an anomalous weak value without post-selection".PHOTONICS RESEARCH 8.9(2020):1468-1474.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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