title: High-precision atom localization via controllable spontaneous emission in a cycle-configuration atomic system.
abstract: A scheme for realizing two-dimensional (2D) atom localization is proposed based on controllable spontaneous emission in a coherently driven cycle-configuration atomic system. As the spatial-position-dependent atom-field interaction, the frequency of the spontaneously emitted photon carries the information about the position of the atom. Therefore, by detecting the emitted photon one could obtain the position information available, and then we demonstrate high-precision and high-resolution 2D atom localization induced by the quantum interference between the multiple spontaneous decay channels. Moreover, we can achieve 100% probability of finding the atom at an expected position by choosing appropriate system parameters under certain conditions.
authors.affiliation: Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Chunling
authors.initials: C
authors.lastname: Ding
authors.forename: Jiahua
authors.initials: J
authors.lastname: Li
authors.forename: Rong
authors.initials: R
authors.lastname: Yu
authors.forename: Xiangying
authors.initials: X
authors.lastname: Hao
authors.forename: Ying
authors.initials: Y
authors.lastname: Wu
mesh_terms: D003198:Computer Simulation; D008956:Models, Chemical; D017785:Photons; D011789:Quantum Theory