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Spatially-resolved potential measurement with ion crystals

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Abstract

We present a method to measure potentials over an extended region using one-dimensional ion crystals in a radio frequency (RF) ion trap. The equilibrium spacings of the ions within the crystal allow the calculation of the external forces acting at each point. From this the overall potential is computed, and even potentials due to specific trap features can be determined. The method can be used to probe potentials near proximal objects in real time, and can be generalised to higher dimensions.

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Acknowledgements

We acknowledge that the ion trap used is courtesy of the group of I.L. Chuang, MIT. We also acknowledge support from the Austrian Science Fund (FWF), the EU network SCALA, the EU STREP project MICROTRAP and the Institut für Quanteninformation GmbH.

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Author notes

  1. W. Hänsel

    Present address: Menlo Systems GmbH, Am Klopferspitz 19a, 82152, Martinsried, Germany

Authors and Affiliations

  1. Institut für Experimentalphysik, Universität Innsbruck, Technikerstrasse 25, 6020, Innsbruck, Austria

    M. Brownnutt, M. Harlander, W. Hänsel & R. Blatt

  2. Institut für Quantenoptik und Quanteninformation, der Österreichischen Akademie der Wissenschaften, Technikerstrasse 21a, 6020, Innsbruck, Austria

    W. Hänsel & R. Blatt

Authors
  1. M. Brownnutt
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  2. M. Harlander
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  3. W. Hänsel
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  4. R. Blatt
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Correspondence to M. Brownnutt.

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Brownnutt, M., Harlander, M., Hänsel, W. et al. Spatially-resolved potential measurement with ion crystals. Appl. Phys. B 107, 1125–1130 (2012). https://doi.org/10.1007/s00340-012-5032-7

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  • DOI: https://doi.org/10.1007/s00340-012-5032-7

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