AUTHOR=Jia Ning , Zhao Xing-Dong , Qi Wen-Rong , Qian Jing 

TITLE=Ultraprecise Off-Axis Atom Localization With Hybrid Fields

JOURNAL=Frontiers in Physics

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2022.933285

DOI=10.3389/fphy.2022.933285

ISSN=2296-424X

ABSTRACT=Atom localization enables a high-precision imaging of the atomic position, which has provided vast applications in fundamental and applied science. In the present work, we propose a scheme for realizing two-dimensional off-axis atomic localization in a three-level $\Lambda$ system. Benefiting from the use of a hybrid coupling field which consists of one Gaussian beam and one Laguerre-Gaussian beam, our scheme shows that the atoms can be localized in arbitrary position with a high spatial resolution. Taking account of realistic parameters, our numerical simulation predicts that the atoms can be precisely localized with a resolution of  ～200 nm in the range of a radial distance of a few micrometers to the beam core. Our results provide a more flexible way to localize atoms in a two-dimensional system, possibly paving one-step closer to the nanometer-scale atomic lithography and ultraprecise microscopy.