Two-dimensional atom localization via a coherence-controlled absorption spectrum in an N-tripod-type five-level atomic system

作者：Ding Chunling; Li Jiahua^*; Yang Xiaoxue; Zhan Zhiming; Liu Ji Bing

来源：Journal of Physics B: Atomic, Molecular and Optical Physics , 2011, 44(14): 145501.

DOI：10.1088/0953-4075/44/14/145501

A scheme of two-dimensional atom localization based on a coherence-controlled absorption spectrum in an N-tripod-type five-level system is proposed, in which the atom interacts with a weak probe field and three standing-wave fields. Position information of the atom can be achieved by measuring the probe absorption. It is found that the localization properties are significantly improved due to the interaction of dark resonances. It is also shown that the localization factors depend strongly on the system parameters that lead to such spatial structures of localization as chain-like, wave-like, ';8';-like, spike-like, crater-like and heart-like patterns. By properly adjusting the system parameters, we can achieve a high-precision and high-resolution atom localization under certain conditions.

• 出版日期2011-7-28
• 单位华中科技大学; 江汉大学; 湖北师范大学