KMS Of Academy of mathematics and systems sciences, CAS
| Exponentially Enhanced Quantum Non-Hermitian Sensing via Optimized Coherent Drive | |
| Bao, Liying1,2; Qi, Bo1,2; Dong, Daoyi3 | |
| 2022-01-26 | |
| Source Publication | PHYSICAL REVIEW APPLIED
 |
| ISSN | 2331-7019 |
| Volume | 17Issue:1Pages:18 |
| Abstract | Distinct non-Hermitian dynamics has demonstrated its advantages in improving measurement precision over traditional sensing protocols. Multimode non-Hermitian lattice dynamics can provide exponentially enhanced quantum sensing where the quantum Fisher information (QFI) per photon increases exponentially with the lattice size. However, it has also been shown that the quintessential non-Hermitian skin effect does not provide any true advantage. In this paper, we demonstrate the importance of optimizing the phase of the coherent drive and the position of the injection and detection in multimode non-Hermitian quantum sensing. The QFI per photon can be exponentially enhanced or exponentially reduced depending on the parameters of the drive and detection. Specifically, it is demonstrated that for large amplification, by choosing appropriate coherent drive parameters, the non-Hermitian skin effect can provide exponentially enhanced quantum sensing. Moreover, in the regime beyond linear response, the skin effect can also provide a clear advantage as compared to the local perturbation and the proposed protocol is robust in tuning the amplification factor. |
| DOI | 10.1103/PhysRevApplied.17.014034 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[11688101] ; National Natural Science Foundation of China[61773370] ; National Natural Science Foundation of China[61833010] ; National Natural Science Foundation of China[61621003] ; Australian Research Council[DP190101566] |
| WOS Research Area | Physics |
| WOS Subject | Physics, Applied |
| WOS ID | WOS:000753877500003 |
| Publisher | AMER PHYSICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.amss.ac.cn/handle/2S8OKBNM/60066 |
| Collection | 中国科学院数学与系统科学研究院 |
| Corresponding Author | Qi, Bo |
| Affiliation | 1.Chinese Acad Sci, Acad Math & Syst Sci, Key Lab Syst & Control, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ New South Wales, Sch Engn & Informat Technol, Canberra, ACT 2600, Australia |
| Recommended Citation GB/T 7714 | Bao, Liying,Qi, Bo,Dong, Daoyi. Exponentially Enhanced Quantum Non-Hermitian Sensing via Optimized Coherent Drive[J]. PHYSICAL REVIEW APPLIED,2022,17(1):18. |
| APA | Bao, Liying,Qi, Bo,&Dong, Daoyi.(2022).Exponentially Enhanced Quantum Non-Hermitian Sensing via Optimized Coherent Drive.PHYSICAL REVIEW APPLIED,17(1),18. |
| MLA | Bao, Liying,et al."Exponentially Enhanced Quantum Non-Hermitian Sensing via Optimized Coherent Drive".PHYSICAL REVIEW APPLIED 17.1(2022):18. |
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