Dresden 2011 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 43: Surface Dynamics II

O 43.1: Vortrag

Mittwoch, 16. März 2011, 11:15–11:30, WIL B122

Field induced noise spectra in ion traps — •H.R. Sadeghpour¹, A. Safavi-Naieni^1,2, P. Weck³, and P. Kral^1,4 — ¹ITAMP, Harvard-Smithsonian CfA, Cambridge, MA 02138 — ²Dept. of Physics, MIT, Cambridge, MA 02139 — ³Dept of Chemistry, UNLV, Las Vegas, NV — ⁴Iqoqi, Austrian Academy Of Sciences, Insbruck, Austria

Electric field noise from fluctuating dipoles adsorbed on surfaces is a significant problem in a number of subfields of physics, ranging from precision measurements, nanomechanics and measurements of weak forces. We describe a first-principles calculations of the dipole properties fluctuating on surfaces, and the electric field noise spectral dependence on distance, frequency and temperature of the ion trap. We discuss implications for the ion trap experiments.