%A Hengfei Zhang(张恒飞), Jinpeng Yuan(元晋鹏), Lirong Wang(汪丽蓉), Liantuan Xiao(肖连团), and Suo-tang Jia(贾锁堂) %T High-precision three-dimensional Rydberg atom localization in a four-level atomic system %0 Journal Article %D 2021 %J Chin. Phys. B %R 10.1088/1674-1056/abd46f %P 53202-053202 %V 30 %N 5 %U {https://cpb.iphy.ac.cn/CN/abstract/article_123463.shtml} %8 2021-05-14 %X Rydberg atoms have been widely investigated due to their large size, long radiative lifetime, huge polarizability and strong dipole-dipole interactions. The position information of Rydberg atoms provides more possibilities for quantum optics research, which can be obtained under the localization method. We study the behavior of three-dimensional (3D) Rydberg atom localization in a four-level configuration with the measurement of the spatial optical absorption. The atomic localization precision depends strongly on the detuning and Rabi frequency of the involved laser fields. A 100% probability of finding the Rydberg atom at a specific 3D position is achieved with precision of ~0.031λ. This work demonstrates the possibility for achieving the 3D atom localization of the Rydberg atom in the experiment.