Archimedean-Spiral-Based Microchip Ring Waveguide for Cold Atoms  

作　　者：蒋小军 李晓林 许忻平 张海潮 王育竹 

机构地区：[1]Key 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 [2]University of Chinese Academy of Sciences

出　　处：《Chinese Physics Letters》2015年第2期1-4,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China under Grant No 2001CB309307;the National Natural Science Foundation of China under Grant Nos 10974210 and 10474105

摘　　要：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 18kHz and 335 μK, respectively, with adc current of 2 A.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 18kHz and 335 μK, respectively, with adc current of 2 A.

关 键 词：Archimedean-Spiral-Based Microchip Ring Waveguide for Cold Atoms 

分 类 号：O562[理学—原子与分子物理]