期刊论文

Zhang, Duo

英文

Optics Communications

0030-4018

2014

321

138-144

10.1016/j.optcom.2014.01.063

This research was supported in part by the National Natural Science Foundation of China under Grant nos. 11275074 , 11375067 , and 11104210 by the Doctoral Foundation of the Ministry of Education of China under Grant no. 20100142120081 and by the National Basic Research Program of China under Contract no. 2012CB922103 . We would like to thank Professor Ying Wu for helpful discussion and his encouragement.

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A scheme of two-dimensional atom localization is proposed based on the phase-sensitive probe absorption and gain in a four-level atomic system with a closed-loop configuration. Due to the spatially dependent atom-field interaction, the position probability distribution of the atom can be directly determined by measuring the resulting absorption and gain spectra of the weak probe laser field. It is found that the phase-sensitive property of the atomic system significantly improves the localization behavior. Especially the maximal probability of ...