中国物理B ›› 2003, Vol. 12 ›› Issue (10): 1087-1095.doi: 10.1088/1009-1963/12/10/308

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

The periodic magnetized cylinder tube for atom guidance: quantized motion analysis

李代军, 周博, 胡正峰, 李师群   

  1. Department of Physics, Centre for Atomic and Molecular Nanoscience, Tsinghua University, Beijing 100084, China; Key Laboratory of Quantum Information and Measurement, Ministry of Education, Beijing 100084, China
  • 收稿日期:2002-12-02 修回日期:2003-05-18 出版日期:2005-03-16 发布日期:2005-03-16
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 19975027) and the State Key Development Program for Basic Research of China (Grant No 001CB309308).

The periodic magnetized cylinder tube for atom guidance: quantized motion analysis

Li Dai-Jun (李代军), Zhou Bo (周博), Hu Zheng-Feng (胡正峰), Li Shi-Qun (李师群)   

  1. Department of Physics, Centre for Atomic and Molecular Nanoscience, Tsinghua University, Beijing 100084, China; Key Laboratory of Quantum Information and Measurement, Ministry of Education, Beijing 100084, China
  • Received:2002-12-02 Revised:2003-05-18 Online:2005-03-16 Published:2005-03-16
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 19975027) and the State Key Development Program for Basic Research of China (Grant No 001CB309308).

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摘要： We have analysed the transport efficiency of an atomic waveguide constructed from a periodic axially magnetized hollow tube. We took into consideration the quantized motion of the atom inside the magnetic hollow cylinder tube, which is significant for the transportation of cold atoms. We deduced the quantized motion modes of the atomic waves in the tube by the approximation of infinite potential, which is valid for cold atoms and strong magnetization. For the atomic waveguide with weak magnetization, we have calculated the tunnelling effect of the atomic wave. The adiabatic condition for the motion of cold atoms is discussed. A time orbit potential method for solving the "zero magnetic field problem" is proposed.

Abstract: We have analysed the transport efficiency of an atomic waveguide constructed from a periodic axially magnetized hollow tube. We took into consideration the quantized motion of the atom inside the magnetic hollow cylinder tube, which is significant for the transportation of cold atoms. We deduced the quantized motion modes of the atomic waves in the tube by the approximation of infinite potential, which is valid for cold atoms and strong magnetization. For the atomic waveguide with weak magnetization, we have calculated the tunnelling effect of the atomic wave. The adiabatic condition for the motion of cold atoms is discussed. A time orbit potential method for solving the "zero magnetic field problem" is proposed.

Key words: atomic waveguide, periodic axially magnetized hollow tube, time orbit potential

中图分类号:  (Tunneling, traversal time, quantum Zeno dynamics)

  • 03.65.Xp
37.10.De (Atom cooling methods)