Population transfer via adiabatic passage in the Rydberg potassium atom
Li Xiao-Hong(李小红)a)b), Zhang Xian-Zhou(张现周)c), Zhang Rui-Zhou(张瑞州)a), and Yang Xiang-Dong(杨向东)b)†
a College of Science, Henan University of Science and Technology, Luoyang 471003, China; b Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China; c Department of Physics, Henan Normal University, Xinxiang 453007, China
Abstract Using the time-dependent multilevel approach, we have calculated the coherent population transfer between the quantum states of potassium atom by a single frequency-chirped laser pulse. The result shows that a pair of sequential `broadband' frequency-chirped laser pulses can efficiently transfer population from the initial state of the ladder system to the target state. It is also found that the population can be efficiently transferred to a target state and trapped there by using an `intuitive' or a `counterintuitive' frequency sweep laser pulse in the case of `narrowband' frequency-chirped laser pulse. Our research shows that the complete population transfer is related to the pulse duration, chirp rate, and amplitude of the laser pulse.
Received: 26 February 2007
Revised: 30 March 2007
Accepted manuscript online:
PACS:
32.80.Xx
(Level crossing and optical pumping)
Fund: Project
supported by the National Natural Science Foundation of China (Grant No~10574096).
Cite this article:
Li Xiao-Hong(李小红), Zhang Xian-Zhou(张现周), Zhang Rui-Zhou(张瑞州), and Yang Xiang-Dong(杨向东) Population transfer via adiabatic passage in the Rydberg potassium atom 2007 Chinese Physics 16 2924
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