Adaptive robust high-precision atomic gravimetry

作者：Jinye Wei, Jiahao Huang, Chaohong Lee · 发表于：Physical Review Research · 年份：2025 · DOI：10.1103/physrevresearch.7.l012064 · 被引用次数：4 · 研究领域：Atomic and Subatomic Physics Research、Noncommutative and Quantum Gravity Theories、Geophysics and Gravity Measurements

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 noises, allowing for a significant improvement in measurement precision in noisy environments. The enhancement can be more than 5 times for a transportable gravimeter [] and up to an order of magnitude for a state-of-the-art fountain gravimeter []. Notably, by optimizing the interferometry sequence, our approach can improve the scaling of the measurement precision ( Δ g est ) versus the total interrogation time ( T ̃ ) to Δ g est ∝ T ̃ − 2 or even better, in contrast to the conventional one Δ g est ∝ 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.