Fundamental limits for reciprocal and nonreciprocal non-Hermitian quantum sensing
文献类型：期刊论文
| 作者 | Bao, Liying4,5; Qi, Bo4,5; Dong, Daoyi3; Nori, Franco1,2 |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2021-04-20 |
| 卷号 | 103期号:4页码:13 |
| ISSN号 | 2469-9926 |
| DOI | 10.1103/PhysRevA.103.042418 |
| 英文摘要 | Non-Hermitian dynamics has been widely studied to enhance the precision of quantum sensing; and nonreciprocity can be a powerful resource for non-Hermitian quantum sensing, as nonreciprocity allows to arbitrarily exceed the fundamental bound on the measurement rate of any reciprocal sensors. Here we establish fundamental limits on signal-to-noise ratio for reciprocal and nonreciprocal non-Hermitian quantum sensing. In particular, for two-mode linear systems with two coherent drives, an approximately attainable uniform bound on the best possiblemeasurement rate per photon is derived for both reciprocal and nonreciprocal sensors. This bound is only related to the coupling coefficients and, in principle, can be made arbitrarily large. Our results thus demonstrate that a conventional reciprocal sensor with two drives can simulate any nonreciprocal sensor. This work also demonstrates a clear signature on how the excitation signals affect the signal-to-noise ratio in non-Hermitian quantum sensing. |
| 资助项目 | National Natural Science Foundation of China[61773370] ; National Natural Science Foundation of China[11688101] ; National Natural Science Foundation of China[61833010] ; Australian Research Councils Discovery Projects funding scheme[DP190101566] ; Alexander von Humboldt Foundation of Germany ; US Office of Naval Research Global[N62909-19-1-2129] ; NTT Research, Japan Science and Technology Agency (JST) (via the Q-LEAP program, Moonshot RD)[JPMJMS2061] ; NTT Research, Japan Science and Technology Agency (JST) (via the CREST)[JP-MJCR1676] ; Japan Society for the Promotion of Science (JSPS) (via the KAKENHI)[JP20H00134] ; Japan Society for the Promotion of Science (JSPS) (via the JSPS-RFBR)[JPJSBP120194828] ; Army Research Office (ARO)[W911NF-18-1-0358] ; Asian Office of Aerospace Research and Development (AOARD)[FA2386-20-1-4069] ; Foundational Questions Institute Fund (FQXi)[FQXi-IAF19-06] |
| WOS研究方向 | Optics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000646151400002 |
| 出版者 | AMER PHYSICAL SOC |
| 源URL | [http://ir.amss.ac.cn/handle/2S8OKBNM/58614]  |
| 专题 | 中国科学院数学与系统科学研究院 |
| 通讯作者 | Qi, Bo |
| 作者单位 | 1.Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA 2.RIKEN, Theoret Quantum Phys Lab, Saitama 3510198, Japan 3.Univ New South Wales, Sch Engn & Informat Technol, Canberra, ACT 2600, Australia 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Acad Math & Syst Sci, Key Lab Syst & Control, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bao, Liying,Qi, Bo,Dong, Daoyi,et al. Fundamental limits for reciprocal and nonreciprocal non-Hermitian quantum sensing[J]. PHYSICAL REVIEW A,2021,103(4):13. |
| APA | Bao, Liying,Qi, Bo,Dong, Daoyi,&Nori, Franco.(2021).Fundamental limits for reciprocal and nonreciprocal non-Hermitian quantum sensing.PHYSICAL REVIEW A,103(4),13. |
| MLA | Bao, Liying,et al."Fundamental limits for reciprocal and nonreciprocal non-Hermitian quantum sensing".PHYSICAL REVIEW A 103.4(2021):13. |
入库方式： OAI收割
来源：数学与系统科学研究院
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