We propose an atom localization scheme for a tripod-type atom making use of the sharp absorption peak resulting from interacting double-dark resonances. It is demonstrated that the probability of finding the atom at a particular position, as well as the localization precision, can be dramatically enhanced. The probability can be doubled by adjusting the Rabi frequency of the control field to the maximum Rabi frequency of the standing-wave field. Moreover, much better spatial resolution can be achieved for smaller detunings of the control and the standing-wave fields.
© 2006 Optical Society of America
Original Manuscript: January 3, 2006
Revised Manuscript: April 26, 2006
Manuscript Accepted: May 12, 2006
Dong-chao Cheng, Yue-ping Niu, Ru-xin Li, and Shang-qing Gong, "Controllable atom localization via double-dark resonances in a tripod system," J. Opt. Soc. Am. B 23, 2180-2184 (2006)