Adaptive Robust High-Precision Atomic Gravimetry
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arXiv
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866910774891380736 |
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| author | Wei, Jinye Huang, Jiahao Lee, Chaohong |
| author_facet | Wei, Jinye Huang, Jiahao Lee, Chaohong |
| contents | Atomic gravimeters are the most accurate sensors for measuring gravity, yet a significant challenge lies in achieving high precision while also maintaining high dynamic range and robustness. Here, we develop a protocol for achieving robust high-precision atomic gravimetry based upon adaptive Bayesian quantum estimation. Our protocol incorporates a sequence of interferometry measurements taken with short to long interrogation times and offers several crucial advantages. Firstly, it enables a high dynamic range without the need to scan multiple fringes for pre-estimation, making it more efficient than the conventional frequentist method. Secondly, it improves robustness against noise, allowing for a significant improvement in measurement precision in noisy environments. The enhancement can be more than 5 times for a transportable gravimeter [Sci. Adv. 5, eaax0800 (2019)] and up to an order of magnitude for a state-of-the-art fountain gravimeter [Phys. Rev. A 88, 043610 (2013)]. Notably, by optimizing the interferometry sequence, our approach can improve the scaling of the measurement precision ($Δg_{est}$) versus the total interrogation time ($\tilde{T}$) to $Δg_{est} \propto \tilde{T}^{-2}$ or even better, in contrast to the conventional one $Δg_{est} \propto \tilde{T}^{-0.5}$. Our approach offers superior precision, increased dynamic range, and enhanced robustness, making it highly promising for a range of practical sensing applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_08550 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Adaptive Robust High-Precision Atomic Gravimetry Wei, Jinye Huang, Jiahao Lee, Chaohong Quantum Physics Atomic Physics Atomic gravimeters are the most accurate sensors for measuring gravity, yet a significant challenge lies in achieving high precision while also maintaining high dynamic range and robustness. Here, we develop a protocol for achieving robust high-precision atomic gravimetry based upon adaptive Bayesian quantum estimation. Our protocol incorporates a sequence of interferometry measurements taken with short to long interrogation times and offers several crucial advantages. Firstly, it enables a high dynamic range without the need to scan multiple fringes for pre-estimation, making it more efficient than the conventional frequentist method. Secondly, it improves robustness against noise, allowing for a significant improvement in measurement precision in noisy environments. The enhancement can be more than 5 times for a transportable gravimeter [Sci. Adv. 5, eaax0800 (2019)] and up to an order of magnitude for a state-of-the-art fountain gravimeter [Phys. Rev. A 88, 043610 (2013)]. Notably, by optimizing the interferometry sequence, our approach can improve the scaling of the measurement precision ($Δg_{est}$) versus the total interrogation time ($\tilde{T}$) to $Δg_{est} \propto \tilde{T}^{-2}$ or even better, in contrast to the conventional one $Δg_{est} \propto \tilde{T}^{-0.5}$. Our approach offers superior precision, increased dynamic range, and enhanced robustness, making it highly promising for a range of practical sensing applications. |
| title | Adaptive Robust High-Precision Atomic Gravimetry |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2409.08550 |