中国物理B ›› 2017, Vol. 26 ›› Issue (3): 30701-030701.doi: 10.1088/1674-1056/26/3/030701

• GENERAL • 上一篇    下一篇

Spin dynamics of magnetic resonance with parametric modulation in a potassium vapor cell

Rui Zhang(张锐), Zhi-Guo Wang(汪之国), Xiang Peng(彭翔), Wen-Hao Li(黎文浩), Song-Jian Li(李松健), Hong Guo(郭弘)   

  1. 1 College of Science, and Interdisciplinary Center for Quantum Information, National University of Defense Technology, Changsha 410073, China;
    2 State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, and Center for Quantum Information Technology, Peking University, Beijing 100871, China;
    3 College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • 收稿日期:2016-10-16 修回日期:2016-12-23 出版日期:2017-03-05 发布日期:2017-03-05
  • 通讯作者: Xiang Peng, Hong Guo E-mail:xiangpeng@pku.edu.cn;hongguo@pku.edu.cn
  • 基金资助:

    Project supported by the National Science Fund for Distinguished Young Scholars of China (Grant No. 61225003), the National Natural Science Foundation of China (Grant Nos. 61531003 and 61571018), and the National High Technology Research and Development Program of China.

Spin dynamics of magnetic resonance with parametric modulation in a potassium vapor cell

Rui Zhang(张锐)1,2, Zhi-Guo Wang(汪之国)1,3, Xiang Peng(彭翔)2, Wen-Hao Li(黎文浩)2, Song-Jian Li(李松健)2, Hong Guo(郭弘)1,2   

  1. 1 College of Science, and Interdisciplinary Center for Quantum Information, National University of Defense Technology, Changsha 410073, China;
    2 State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, and Center for Quantum Information Technology, Peking University, Beijing 100871, China;
    3 College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • Received:2016-10-16 Revised:2016-12-23 Online:2017-03-05 Published:2017-03-05
  • Contact: Xiang Peng, Hong Guo E-mail:xiangpeng@pku.edu.cn;hongguo@pku.edu.cn
  • Supported by:

    Project supported by the National Science Fund for Distinguished Young Scholars of China (Grant No. 61225003), the National Natural Science Foundation of China (Grant Nos. 61531003 and 61571018), and the National High Technology Research and Development Program of China.

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摘要：

A typical magnetic-resonance scheme employs a static bias magnetic field and an orthogonal driving magnetic field oscillating at the Larmor frequency, at which the atomic polarization precesses around the static magnetic field. Here we demonstrate both theoretically and experimentally the variations of the resonance condition and the spin precession dynamics resulting from the parametric modulation of the bias field. We show that the driving magnetic field with the frequency detuned by different harmonics of the parametric modulation frequency can lead to resonance as well. Also, a series of frequency sidebands centered at the driving frequency and spaced by the parametric modulation frequency can be observed in the precession of the atomic polarization. We further show that the resonant amplitudes of the sidebands can be controlled by varying the ratio between the amplitude and the frequency of the parametric modulation. These effects could be used in different atomic magnetometry applications.

关键词: atomic magnetometer, magnetic resonance, parametric modulation

Abstract:

A typical magnetic-resonance scheme employs a static bias magnetic field and an orthogonal driving magnetic field oscillating at the Larmor frequency, at which the atomic polarization precesses around the static magnetic field. Here we demonstrate both theoretically and experimentally the variations of the resonance condition and the spin precession dynamics resulting from the parametric modulation of the bias field. We show that the driving magnetic field with the frequency detuned by different harmonics of the parametric modulation frequency can lead to resonance as well. Also, a series of frequency sidebands centered at the driving frequency and spaced by the parametric modulation frequency can be observed in the precession of the atomic polarization. We further show that the resonant amplitudes of the sidebands can be controlled by varying the ratio between the amplitude and the frequency of the parametric modulation. These effects could be used in different atomic magnetometry applications.

Key words: atomic magnetometer, magnetic resonance, parametric modulation

中图分类号:  (Magnetometers for magnetic field measurements)

  • 07.55.Ge
32.30.Dx (Magnetic resonance spectra) 32.10.Dk (Electric and magnetic moments, polarizabilities) 32.80.Xx (Level crossing and optical pumping)