Characterization of Arbitrary-Order Correlations in Quantum Baths by Weak Measurement
文献类型：期刊论文
| 作者 | Liu, Ren-Bao1,5; Wang, Ping5; Chen, Chong5; Peng, Xinhua2,3,4; Wrachtrup, Jorg6,7,8 |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2019-08-01 |
| 卷号 | 123期号:5页码:6 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/PhysRevLett.123.050603 |
| 通讯作者 | Liu, Ren-Bao(rbliu@cuhk.edu.hk) |
| 英文摘要 | Correlations of fluctuations are the driving forces behind the dynamics and thermodynamics in quantum many-body systems. For qubits embedded in a quantum bath, the correlations in the bath are key to understanding and combating decoherence-a critical issue in quantum information technology. However, there is no systematic method for characterizing the many-body correlations in quantum baths beyond the second order or the Gaussian approximation. Here we present a scheme to characterize the correlations in a quantum bath to arbitrary order. The scheme employs a weak measurement of the bath via the projective measurement of a central system. The bath correlations, including both the "classical" and the "quantum" parts, can be reconstructed from the correlations of the measurement outputs. The possibility of full characterization of many-body correlations in a quantum bath forms the basis for optimizing quantum control against decoherence in realistic environments, for studying the quantum characteristics of baths, and for the quantum sensing of correlated clusters in quantum baths. |
| WOS关键词 | DECOHERENCE ; SUPPRESSION ; SYSTEM |
| 资助项目 | Hong Kong RGC-NSFC Joint Scheme[N_CUHK403/16] ; National Key Research and Development Program of China[2018YFA0306600] ; Anhui Initiative in Quantum Information Technologies[AHY050000] ; National Natural Science Foundation of China[11425523] ; National Natural Science Foundation of China[11661161018] ; European Union via EU ERC grant SMeL ; EU project ASTERIQS ; Volkswagen Foundation |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000479003800002 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | Hong Kong RGC-NSFC Joint Scheme ; National Key Research and Development Program of China ; Anhui Initiative in Quantum Information Technologies ; National Natural Science Foundation of China ; European Union via EU ERC grant SMeL ; EU project ASTERIQS ; Volkswagen Foundation |
| 源URL | [http://119.78.100.186/handle/113462/132864]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Liu, Ren-Bao |
| 作者单位 | 1.Chinese Univ Hong Kong, Hong Kong Inst Quantum Informat Sci & Technol, Shatin, Hong Kong, 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, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China 4.Univ Sci & Technol China, CAS Key Lab Microscale Magnet Resonance & Synerge, Ctr Quantum Informat & Quantum Phys, Hefei 230026, Anhui, Peoples R China 5.Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China 6.Univ Stuttgart, Inst Phys 3, Res Ctr, SCoPE, D-70569 Stuttgart, Germany 7.Univ Stuttgart, IQST, D-70569 Stuttgart, Germany 8.Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany |
| 推荐引用方式 GB/T 7714 | Liu, Ren-Bao,Wang, Ping,Chen, Chong,et al. Characterization of Arbitrary-Order Correlations in Quantum Baths by Weak Measurement[J]. PHYSICAL REVIEW LETTERS,2019,123(5):6. |
| APA | Liu, Ren-Bao,Wang, Ping,Chen, Chong,Peng, Xinhua,&Wrachtrup, Jorg.(2019).Characterization of Arbitrary-Order Correlations in Quantum Baths by Weak Measurement.PHYSICAL REVIEW LETTERS,123(5),6. |
| MLA | Liu, Ren-Bao,et al."Characterization of Arbitrary-Order Correlations in Quantum Baths by Weak Measurement".PHYSICAL REVIEW LETTERS 123.5(2019):6. |
入库方式： OAI收割
来源：近代物理研究所
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