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Efficient Direct Measurement of Arbitrary Quantum Systems via Weak Measurement

文献类型：期刊论文

作者Du, Jiangfeng1,2,3,6; Wang, Ya1,2,3,6; Ren, Changliang3,4,5
刊名PHYSICAL REVIEW APPLIED
出版日期2019-07-24
卷号12期号:1页码:10
ISSN号2331-7019
DOI10.1103/PhysRevApplied.12.014045
通讯作者Ren, Changliang(renchangliang@cigit.ac.cn)
英文摘要Obtaining the density matrix that fully describes a quantum system is central to quantum science. Recently, the technique of "direct measurement" has been proposed to characterize a quantum state in situ; however, all the existing schemes require sequential weak and strong measurements, which strongly limits their practical application. Here, we present an efficient scheme for directly measuring arbitrary quantum matrix elements with only one strong measurement or weak measurement on each qudit. Our scheme is experimentally feasible for the direct measurement of arbitrary quantum states; in particular, multiparticle quantum entangled states. This scheme has applications in the characterization of large-scale quantum systems.
WOS关键词LOGIC GATES ; REALIZATION ; INFORMATION ; COMPONENT ; VALUES ; STATES ; SPIN
资助项目National Key R&D Program of China[2017YFA0305200] ; National Key R&D Program of China[2018YFA0306600] ; National Key R&D Program of China[2017YFA0305000] ; National Natural Science Foundation of China (NNSFC)[11605205] ; National Natural Science Foundation of China (NNSFC)[81788101] ; National Natural Science Foundation of China (NNSFC)[11761131011] ; National Natural Science Foundation of China (NNSFC)[11775209] ; Anhui Initiative in Quantum Information Technologies[AHY050000] ; Natural Science Foundation of Chongqing[cstc2015jcyjA00021] ; Natural Science Foundation of Chongqing[cstc2018jcyjAX0656] ; Entrepreneurship and Innovation Support Program for Chongqing Overseas Returnees[cx2017134] ; Entrepreneurship and Innovation Support Program for Chongqing Overseas Returnees[cx2018040] ; Chinese Academy of Sciences (CAS)[GJJSTD20170001] ; Chinese Academy of Sciences (CAS)[QYZDY-SSW-SLH004] ; Innovative Program of the Development Foundation of Hefei Center for Physical Science and Technology[2017FXCX005] ; Fundamental Research Funds for the Central Universities ; CAS Key Laboratory of Microscale Magnetic Resonance ; CAS Key Laboratory of Quantum Information ; Thousand-Young-Talent Program of China
WOS研究方向Physics
语种英语
WOS记录号WOS:000477919500004
出版者AMER PHYSICAL SOC
资助机构National Key R&D Program of China ; National Natural Science Foundation of China (NNSFC) ; Anhui Initiative in Quantum Information Technologies ; Natural Science Foundation of Chongqing ; Entrepreneurship and Innovation Support Program for Chongqing Overseas Returnees ; Chinese Academy of Sciences (CAS) ; Innovative Program of the Development Foundation of Hefei Center for Physical Science and Technology ; Fundamental Research Funds for the Central Universities ; CAS Key Laboratory of Microscale Magnetic Resonance ; CAS Key Laboratory of Quantum Information ; Thousand-Young-Talent Program of China
源URL[http://119.78.100.186/handle/113462/132922]  
专题中国科学院近代物理研究所
通讯作者Ren, Changliang
作者单位1.Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China
2.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
3.Univ Sci & Technol China, CAS Key Lab Microscale Magnet Resonance, Hefei 230026, Anhui, Peoples R China
4.Univ Sci & Technol China, CAS Key Lab Quantum Informat, Hefei 230026, Anhui, Peoples R China
5.Chinese Acad Sci, Ctr Nanofabricat & Syst Integrat, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
6.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Du, Jiangfeng,Wang, Ya,Ren, Changliang. Efficient Direct Measurement of Arbitrary Quantum Systems via Weak Measurement[J]. PHYSICAL REVIEW APPLIED,2019,12(1):10.
APA Du, Jiangfeng,Wang, Ya,&Ren, Changliang.(2019).Efficient Direct Measurement of Arbitrary Quantum Systems via Weak Measurement.PHYSICAL REVIEW APPLIED,12(1),10.
MLA Du, Jiangfeng,et al."Efficient Direct Measurement of Arbitrary Quantum Systems via Weak Measurement".PHYSICAL REVIEW APPLIED 12.1(2019):10.

入库方式： OAI收割

来源：近代物理研究所

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