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arXiv · 1807.06043

Surface trap with dc-tunable ion-electrode distance

Da An·Clemens Matthiesen·Ahmed Abdelrahman·Maya Berlin-Udi·Dylan Gorman·Sönke Möller·Erik Urban·Hartmut Häffner
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Abstract

We describe the design, fabrication, and operation of a novel surface-electrode Paul trap that produces a radio-frequency-null along the axis perpendicular to the trap surface. This arrangement enables control of the vertical trapping potential and consequentially the ion-electrode distance via dc-electrodes only. We demonstrate confinement of single $^{40}$Ca$^+$ ions at heights between $50~\mu$m and $300~\mu$m above planar copper-coated aluminium electrodes. We investigate micromotion in the vertical direction and show cooling of both the planar and vertical motional modes into the ground state. This trap architecture provides a platform for precision electric-field noise detection, trapping of vertical ion strings without excess micromotion, and may have applications for scalable quantum computers with surface ion traps.

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Da An, Clemens Matthiesen, Ahmed Abdelrahman, Maya Berlin-Udi, Dylan Gorman, Sönke Möller, Erik Urban, Hartmut Häffner. 2018-07-16. Surface trap with dc-tunable ion-electrode distance. https://arxiv.org/abs/1807.06043

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