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Principles and Methods of Quantum Information Technologies pp 111–133Cite as

Cold Atom Magnetometers

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Part of the book series: Lecture Notes in Physics ((LNP,volume 911))

Abstract

Detection of weak magnetic fields with high spatial resolution is an important technology for various applications such as biological imaging, detection of MRI signals and fundamental physics. Cold atom magnetometry enables 10−11 T/\(\sqrt{\text{Hz}}\) sensitivities at the micron scale, that is, at the scale of a typical biological cell size. This magnetometry takes advantage of unique properties of atomic gaseous Bose-Einstein condensates with internal spin degrees of freedom. In this chapter, we first overview various state-of-the-art magnetometers, addressing their sensitivities and spatial resolutions. Then we describe properties of spinor condensates, ultracold atom magnetometers, and the latest research developments achieved in the FIRST project, especially for the detection of alternate current magnetic fields using a spin-echo-based magnetometer. We also discuss future prospects of the magnetometers.

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Acknowledgements

We would like to thank H. Ikeda, H. Suzuki, S. Hasegawa, Y. Tomiyama, S. Sekine, and H. Saito for their contribution to the research reported in this chapter. We also thank T. Ichikawa, S. Tojo and T. Kuwamoto for valuable discussions.

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Authors and Affiliations

  1. Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo, 171-8588, Japan

    Yujiro Eto & Takuya Hirano

  2. Research Institute of Electrical Communication, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai-shi, 980-8577, Japan

    Mark Sadrove

Authors
  1. Yujiro Eto
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Correspondence to Takuya Hirano .

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Editors and Affiliations

  1. ImPACT Program, Council for Science Technology and Innovation, Tokyo, Japan

    Yoshihisa Yamamoto

  2. National Institute of Information and Communications Technology, Koganei, Tokyo, Japan

    Kouichi Semba

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Eto, Y., Sadrove, M., Hirano, T. (2016). Cold Atom Magnetometers. In: Yamamoto, Y., Semba, K. (eds) Principles and Methods of Quantum Information Technologies. Lecture Notes in Physics, vol 911. Springer, Tokyo. https://doi.org/10.1007/978-4-431-55756-2_6

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