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Sensing electric and magnetic fields with Bose-Einstein condensates

Appl. Phys. Lett. 88, 264103 (2006); doi:10.1063/1.2216932

Published 27 June 2006

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S. Wildermuth, S. Hofferberth, I. Lesanovsky, S. Groth, P. Krüger, and J. Schmiedmayer
Physikalisches Institut, Universität Heidelberg, 69120 Heidelberg, Germany

I. Bar-Joseph
Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot 76100, Israel
We experimentally demonstrate that one-dimensional Bose-Einstein condensates brought close to microfabricated wires on an atom chip are a very sensitive sensor for magnetic and electric fields reaching a sensitivity to potential variations of ~10–14  eV at 3  µm spatial resolution. We measure a two-dimensional magnetic field map 10  µm above a 100-µm-wide wire and show how the transverse current-density component inside the wire can be reconstructed. The relation between the field sensitivity and the spatial resolution is discussed and further improvements utilizing Feshbach-resonances are outlined. ©2006 American Institute of Physics
History: Received 21 December 2005; accepted 11 May 2006; published 27 June 2006
Permalink: http://link.aip.org/link/?APPLAB/88/264103/1
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KEYWORDS and PACS

Keywords
PACS
  • 06.30.Ka
    Basic electromagnetic quantities
  • 07.07.Df
    Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
  • YEAR: 2006

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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