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Measuring Electric Fields From Surface Contaminants with Neutral Atoms
J. M. Obrecht, R. J. Wild, E. A. Cornell
In this paper we demonstrate a technique of utilizing magnetically trapped neutral Rb-87 atoms to measure the magnitude and direction of stray electric fields emanating from surfac…
Alkali adsorbate polarization on conducting and insulating surfaces probed with Bose-Einstein condensates
J. M. McGuirk, D. M. Harber, J. M. Obrecht +1
A magnetically trapped 87Rb Bose-Einstein condensate is used as a sensitive probe of short-range electrical forces. In particular, the electric polarization of, and the subsequent…
Thermally Induced Losses in Ultra-Cold Atoms Magnetically Trapped Near Room-Temperature Surfaces
D. M. Harber, J. M. McGuirk, J. M. Obrecht +1
We have measured magnetic trap lifetimes of ultra-cold Rb87 atoms at distances of 5-1000 microns from surfaces of conducting metals with varying resistivity. Good agreement is foun…