中国物理B ›› 2007, Vol. 16 ›› Issue (10): 2924-2929.doi: 10.1088/1009-1963/16/10/017

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Population transfer via adiabatic passage in the Rydberg potassium atom

张瑞州1, 李小红2, 张现周3, 杨向东4   

  1. (1)College of Science, Henan University of Science and Technology, Luoyang 471003, China; (2)College of Science, Henan University of Science and Technology, Luoyang 471003, China;Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China; (3)Department of Physics, Henan Normal University, Xinxiang 453007, China; (4)Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
  • 收稿日期:2007-02-26 修回日期:2007-03-30 出版日期:2007-10-08 发布日期:2007-10-08
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No~10574096).

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)†   

  1. 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
  • Received:2007-02-26 Revised:2007-03-30 Online:2007-10-08 Published:2007-10-08
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No~10574096).

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摘要： 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.

关键词: coherent population transfer, adiabatic passage, laser pulse, frequency sweep

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.

Key words: coherent population transfer, adiabatic passage, laser pulse, frequency sweep

中图分类号:  (Level crossing and optical pumping)

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