Open AccessTwo-dimensional atom localization based on coherent field controlling in a five-level M-type atomic system
Author(s) -
Xin Jiang,
Jinjiang Li,
Xiaohan Sun
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.031678
Subject(s) - physics , rabi frequency , microwave , atom (system on chip) , coherence (philosophical gambling strategy) , atomic physics , field (mathematics) , wavelength , coupling (piping) , photon , optics , coherence time , laser , quantum mechanics , materials science , mathematics , computer science , pure mathematics , metallurgy , embedded system
We study two-dimensional sub-wavelength atom localization based on the microwave coupling field controlling and spontaneously generated coherence (SGC) effect. For a five-level M-type atom, introducing a microwave coupling field between two upper levels and considering the quantum interference between two transitions from two upper levels to lower levels, the analytical expression of conditional position probability (CPP) distribution is obtained using the iterative method. The influence of the detuning of a spontaneously emitted photon, Rabi frequency of the microwave field, and the SGC effect on the CPP are discussed. The two-dimensional sub-half-wavelength atom localization with high-precision and high spatial resolution is achieved by adjusting the detuning and the Rabi frequency, where the atom can be localized in a region smaller thanλ/10×λ/10. The spatial resolution is improved significantly compared with the case without the microwave field.