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arXiv · 1906.06489

Distance scaling and polarization of electric-field noise in a surface ion trap

Da An·Clemens Matthiesen·Erik Urban·Hartmut Häffner
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Abstract

We probe electric-field noise in a surface ion trap for ion-surface distances $d$ between 50 and 300 $μ\mathrm{m}$ in the normal and planar directions. We find the noise distance dependence to scale as $d^{-2.6}$ in our trap and a frequency dependence which is consistent with $1/f$ noise. Simulations of the electric-field noise specific to our trap geometry provide evidence that we are not limited by technical noise sources. Our distance scaling data is consistent with a noise correlation length of about 100 $μ\mathrm{m}$ at the trap surface, and we discuss how patch potentials of this size would be modified by the electrode geometry.

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Da An, Clemens Matthiesen, Erik Urban, Hartmut Häffner. 2019-06-19. Distance scaling and polarization of electric-field noise in a surface ion trap. https://doi.org/10.1103/physreva.100.063405

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