Population transfer via adiabatic passage in the Rydberg potassium atom
Zhang Rui-Zhoua, Li Xiao-Hongb, Zhang Xian-Zhouc, Yang Xiang-Dongd
a College of Science, Henan University of Science and Technology,
Luoyang 471003, China; b College of Science, Henan University of Science and Technology,
Luoyang 471003, China;Institute of Atomic and Molecular Physics, Sichuan University, Chengdu
610065, China; c Department of Physics, Henan Normal University, Xinxiang 453007,
China; d Institute of Atomic and Molecular Physics, Sichuan University, Chengdu
610065, 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
Published: 08 October 2007
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:
Zhang Rui-Zhou, Li Xiao-Hong, Zhang Xian-Zhou, Yang Xiang-Dong Population transfer via adiabatic passage in the Rydberg potassium atom 2007 Chin. Phys. 16 2924
