Smooth Archimedean-spiral ring waveguide for cold atomic gyroscope  

作　　者：蒋小军 李晓林 张海潮 王育竹 

机构地区：[1]Key Laboratory for Quantum Optics and Center for Cold Atom Physics of CAS, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China [2]University of Chinese Academy of Sciences, Beijing 100049, Chin

出　　处：《Chinese Optics Letters》2016年第7期1-4,共4页中国光学快报（英文版）

基　　金：supported by the State Key Basic Research Program(No.2001CB309307);the National Natural Science Foundation of China(Nos.10974210 and 10474105)

摘　　要：We propose a robust scheme that creates a toroidal magnetic potential on a single-layer atom chip. The wire layout consists of two interleaved Archimedean spirals, which avoids the trapping perturbation caused by the input and output ports. By using a rotation bias field, the minimum of the time-averaged orbiting potential is lifted from zero, and then a relatively smooth and harmonic ring trap is formed. The location of the waveguide is immune to the magnetic variations, as it is only determined by the wire layout. The ring waveguide offers an ideal solution to developing a compact and portable atomic Kyroscope.We propose a robust scheme that creates a toroidal magnetic potential on a single-layer atom chip. The wire layout consists of two interleaved Archimedean spirals, which avoids the trapping perturbation caused by the input and output ports. By using a rotation bias field, the minimum of the time-averaged orbiting potential is lifted from zero, and then a relatively smooth and harmonic ring trap is formed. The location of the waveguide is immune to the magnetic variations, as it is only determined by the wire layout. The ring waveguide offers an ideal solution to developing a compact and portable atomic Kyroscope.

关 键 词：ATOMS GYROSCOPES 

分 类 号：TN96[电子电信—信号与信息处理]