Brief Communications

Nature 435, 440 (26 May 2005) | doi:10.1038/435440a; Published online 25 May 2005

Bose–Einstein condensates:  Microscopic magnetic-field imaging

Stephan Wildermuth1, Sebastian Hofferberth1, Igor Lesanovsky1, Elmar Haller1, L. Mauritz Andersson1, Sönke Groth1,2, Israel Bar-Joseph2, Peter Krüger1 & Jörg Schmiedmayer1

Today's magnetic-field sensors1 are not capable of making measurements with both high spatial resolution and good field sensitivity. For example, magnetic force microscopy2 allows the investigation of magnetic structures with a spatial resolution in the nanometre range, but with low sensitivity, whereas SQUIDs3 and atomic magnetometers4 enable extremely sensitive magnetic-field measurements to be made, but at low resolution. Here we use one-dimensional Bose–Einstein condensates in a microscopic field-imaging technique that combines high spatial resolution (within 3 micrometres) with high field sensitivity (300 picotesla).

  1. Physikalisches Institut, Universität Heidelberg, Philosophenweg 12, 69120 Heidelberg, Germany
  2. Department of Condensed Matter Physics, The Weizmann Institute of Science, Rehovot 76100, Israel

Correspondence to: Jörg Schmiedmayer1 Email: schmiedmayer@atomchip.org

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