Population transfer via adiabatic passage in the Rydberg potassium atom |
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Authors: | Li Xiao-Hong Zhang Xian-Zhou Zhang Rui-Zhou and Yang Xiang-Dong |
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Institution: | College of Science, Henan University of Science and Technology, Luoyang 471003, China; Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China; Department of Physics, Henan Normal University, Xinxiang 453007, China |
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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. |
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Keywords: | coherent population transfer adiabatic passage laser
pulse frequency sweep |
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