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).
- Bose-Einstein condensate
- magnetic field imaging
Wildermuth, S., Hofferberth, S., Lesanovsky, I., Haller, E., Andersson, L. M., Groth, S., Bar-Joseph, I., Krüger, P., & Schmiedmayer, J. (2005). Bose-Einstein condensates: microscopic magnetic-field imaging. Nature, 435(7041), 440. https://doi.org/10.1038/435440a