Enhanced metrology based on flipping trajectory of cold Rydberg gases
Abstract
The dynamical trajectory of a dissipative Rydberg many-body system could be flipped under a microwave field driving, displaying an enhanced sensitivity. This is because the intersection of the folded hysteresis trajectories exhibits a sharp peak near the phase transition, amplifying the response to small changes in the microwave field. Here, we demonstrate an experiment of enhanced metrology through flipping the hysteresis trajectory in a cold atomic system, displaying an approach to improve sensitivity near the gap-closing points. By measuring the intersection points of hysteresis trajectories versus Rabi frequency of the microwave field, we quantify the equivalent sensitivity to be 1.6(5) nV cm-1 Hz-1/2. The measurement is also dependent on the interaction time, optical depth and principal quantum number since the long-range interaction between Rydberg atoms could dramatically change the shape of hysteresis trajectories. The reported results suggest that flipping trajectory features in cold Rydberg many-body systems could advance sensing and metrology applications.
Cite
@article{arxiv.2409.11035,
title = {Enhanced metrology based on flipping trajectory of cold Rydberg gases},
author = {Ya-Jun Wang and Jun Zhang and Zheng-Yuan Zhang and Shi-Yao Shao and Qing Li and Han-Chao Chen and Yu Ma and Tian-Yu Han and Qi-Feng Wang and Jia-Dou Nan and Yi-Ming Yin and Dong-Yang Zhu and Qiao-Qiao Fang and Chao Yu and Xin Liu and Guang-Can Guo and Bang Liu and Li-Hua Zhang and Dong-Sheng Ding and Bao-Sen Shi},
journal= {arXiv preprint arXiv:2409.11035},
year = {2025}
}