Chin. Phys. Lett.  2015, Vol. 32 Issue (02): 020301    DOI: 10.1088/0256-307X/32/2/020301
GENERAL |
Archimedean-Spiral-Based Microchip Ring Waveguide for Cold Atoms
JIANG Xiao-Jun1,2, LI Xiao-Lin1, XU Xin-Ping1, ZHANG Hai-Chao1, WANG Yu-Zhu1
1Key Laboratory for Quantum Optics and Center for Cold Atom Physics of Chinese Academy of Sciences, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
2University of Chinese Academy of Sciences, Beijing 100049
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JIANG Xiao-Jun, LI Xiao-Lin, XU Xin-Ping et al  2015 Chin. Phys. Lett. 32 020301
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Abstract We present a scheme for generating a ring magnetic waveguide on a single-layer atom chip. The wire layout consists of two interleaved Archimedean spirals of the same size. The waveguide avoids the trapping perturbation caused by the input and output ports, resulting in an enclosed guiding loop for neutral atoms in weak-field seeking states. Such a configuration can create a tight and deep trap potential with a small current. Taking the |F=2,mF=2> state of 87Rb as an example, the trap frequency and depth are estimated to be 18 kHz and 335 μK, respectively, with a dc current of 2 A.
Published: 20 January 2015
PACS:  03.75.Dg (Atom and neutron interferometry)  
  37.25.+k (Atom interferometry techniques)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/32/2/020301       OR      https://cpl.iphy.ac.cn/Y2015/V32/I02/020301
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JIANG Xiao-Jun
LI Xiao-Lin
XU Xin-Ping
ZHANG Hai-Chao
WANG Yu-Zhu
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