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Multilevel atomic Ramsey interferometry for precise parameter estimations Project supported by the National Natural Science Foundation of China (Grant No. 11974290).
- Source :
-
Chinese Physics B . Dec2021, Vol. 30 Issue 12, p1-8. 8p. - Publication Year :
- 2021
-
Abstract
- Multi-path (or multi-mode) entanglement has been proved to be a useful resource for sub-shot-noise sensitivity of phase estimation, which has aroused much research interest inquantum metrology recently. Various schemes of multi-path interferometers based on optical systems have been put forward. Here, we study a multi-state interferometer with multi-level atoms by projective measurements. Specifically, we investigate its ultimate sensitivity described by quantum Fisher information theory and find that the Cramerâ€"Rao bound can be achieved. In particular, we investigate a specific scheme to improve the sensitivityof magnetometery with a three-state interferometry delivered by a single nitrogen-vacancy (NV) center of diamond with tailor pulses. The impacts of imperfections of the atomic beam-splitter, described by the three-level quantum Fourier transform, on the sensitivity of phase estimation is also discussed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16741056
- Volume :
- 30
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Chinese Physics B
- Publication Type :
- Academic Journal
- Accession number :
- 154194444
- Full Text :
- https://doi.org/10.1088/1674-1056/ac0527