title: Bose-Einstein condensates: microscopic magnetic-field imaging.
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).
authors.affiliation: Physikalisches Institut, Universität Heidelberg, Philosophenweg 12, 69120 Heidelberg, Germany.
authors.forename: Stephan
authors.initials: S
authors.lastname: Wildermuth
authors.forename: Sebastian
authors.initials: S
authors.lastname: Hofferberth
authors.forename: Igor
authors.initials: I
authors.lastname: Lesanovsky
authors.forename: Elmar
authors.initials: E
authors.lastname: Haller
authors.forename: L Mauritz
authors.initials: LM
authors.lastname: Andersson
authors.forename: Sönke
authors.initials: S
authors.lastname: Groth
authors.forename: Israel
authors.initials: I
authors.lastname: Bar-Joseph
authors.forename: Peter
authors.initials: P
authors.lastname: Krüger
authors.forename: Jörg
authors.initials: J
authors.lastname: Schmiedmayer