Atomic clock locking with Bayesian quantum parameter estimation: Scheme and experiment
Atomic clocks are crucial for fundamental science and practical technology, but their sensitivity is often constrained by the standard quantum limit. With a cold-atom coherent-population-trapping clock, the authors design and experimentally demonstrate an adaptive Bayesian quantum frequency estimation protocol that approaches the Heisenberg scaling with respect to total interrogation time. This atomic clock also yields improved fractional frequency stability and enhanced robustness against technical noises. This work provides a high-precision approach to atomic clock locking, and holds promising applications in various interferometry-based quantum sensors.
Authors
- Maojie Li (ORCID: https://orcid.org/0009-0007-7459-009X)
- Jiatao Wu (ORCID: https://orcid.org/0000-0003-3678-2481)
- Ruihuan Fang (ORCID: https://orcid.org/0000-0002-7691-1607)
- Chengyin Han (ORCID: https://orcid.org/0000-0003-0771-8819)
- Jiahao Huang (ORCID: https://orcid.org/0000-0001-7288-9724)
- Chaohong Lee (ORCID: https://orcid.org/0000-0001-9883-5900)
- Zhan Chang
- Yuxiang Qiu (ORCID: https://orcid.org/0000-0002-5279-1524)
- Zhu Ma (ORCID: https://orcid.org/0000-0001-7272-9325)
- Bo Lü (ORCID: https://orcid.org/0000-0001-7704-3824)
Institutions
- Sun Yat-sen University (CN)
- Shenzhen University (CN)
- Hubei Normal University (CN)
- Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (CN)
Publication Details
- Journal
- Physical Review Applied
- Published
- 2024-10-23
- DOI
- https://doi.org/10.1103/physrevapplied.22.044058
- Citations
- 6
- Primary Topic
- Atomic and Subatomic Physics Research
- Type
- article
- Field-Weighted Citation Impact
- 2.03
Funders
- National Natural Science Foundation of China
- National Key Research and Development Program of China