Efficient Direct Measurement of Arbitrary Quantum Systems via Weak Measurement
文献类型：期刊论文
| 作者 | Ren, Changliang2,3,6 ; Wang, Ya1,3,4,5; Du, Jiangfeng1,3,4,5
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| 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 |
| DOI | 10.1103/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. |
| 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 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/8311]  |
| 专题 | 微纳制造与系统集成研究中心 |
| 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, CAS Key Lab Quantum Informat, 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, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China 5.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China 6.Chinese Acad Sci, Ctr Nanofabricat & Syst Integrat, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ren, Changliang,Wang, Ya,Du, Jiangfeng. Efficient Direct Measurement of Arbitrary Quantum Systems via Weak Measurement[J]. PHYSICAL REVIEW APPLIED,2019,12(1):10. |
| APA | Ren, Changliang,Wang, Ya,&Du, Jiangfeng.(2019).Efficient Direct Measurement of Arbitrary Quantum Systems via Weak Measurement.PHYSICAL REVIEW APPLIED,12(1),10. |
| MLA | Ren, Changliang,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：重庆绿色智能技术研究院
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