中国物理B ›› 2010, Vol. 19 ›› Issue (8): 83205-083205.doi: 10.1088/1674-1056/19/8/083205

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Single layer atom chip for magnetically trapping one-dimensional array of ultracold atoms

程峰, 颜波, 柯敏, 王育竹   

  1. The Laboratory of Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; Center for Cold Atom Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • 收稿日期:2009-06-15 修回日期:2009-12-01 出版日期:2010-08-15 发布日期:2010-08-15
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2006CB921202) and the National Natural Science Foundation of China (Grant No. 10974210).

Single layer atom chip for magnetically trapping one-dimensional array of ultracold atoms

Cheng Feng(程峰), Yan Bo(颜波), Ke Min(柯敏), and Wang Yu-Zhu(王育竹)†   

  1. The Laboratory of Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; Center for Cold Atom Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • Received:2009-06-15 Revised:2009-12-01 Online:2010-08-15 Published:2010-08-15
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2006CB921202) and the National Natural Science Foundation of China (Grant No. 10974210).

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摘要： We propose a wire configuration to create a one-dimensional (1D) array of magnetic microtraps for trapping ultracold atoms. The configuration is formed by replacing the central part of the Z-wire pattern with a zigzag wire. We simulate the performance of this pattern by the finite element method which can take both the width and depth of the wire into consideration. The result of simulation shows that this configuration can create magnetic microtraps which can be separated and combined by changing the bias magnetic field. We manage to split the Z-wire trap and prove that a similar result can occur for the new wire configuration. The fabrication processes of the atom chip are also introduced. Finally we discuss the loading method.

Abstract: We propose a wire configuration to create a one-dimensional (1D) array of magnetic microtraps for trapping ultracold atoms. The configuration is formed by replacing the central part of the Z-wire pattern with a zigzag wire. We simulate the performance of this pattern by the finite element method which can take both the width and depth of the wire into consideration. The result of simulation shows that this configuration can create magnetic microtraps which can be separated and combined by changing the bias magnetic field. We manage to split the Z-wire trap and prove that a similar result can occur for the new wire configuration. The fabrication processes of the atom chip are also introduced. Finally we discuss the loading method.

Key words: atom chip, magnetic micro-trap array, magnetic lattices

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

  • 32.80.Xx
37.10.De (Atom cooling methods) 37.10.Vz (Mechanical effects of light on atoms, molecules, and ions)