Bose-Einstein condensates : microscopic magnetic-field imaging

Wildermuth, Stephan and Hofferberth, Sebastian and Lesanovsky, Igor and Haller, Elmar and Andersson, L Mauritz and Groth, Sönke and Bar-Joseph, Israel and Krüger, Peter and Schmiedmayer, Jörg (2005) Bose-Einstein condensates : microscopic magnetic-field imaging. Nature, 435 (7041). p. 440. ISSN 1476-4687

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Abstract

Today's magnetic-field sensors are not capable of making measurements with both high spatial resolution and good field sensitivity. For example, magnetic force microscopy allows the investigation of magnetic structures with a spatial resolution in the nanometre range, but with low sensitivity, whereas SQUIDs and atomic magnetometers 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).