Surface trap with dc-tunable ion-electrode distance
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 the confinement of single 40Ca+ ions at heights between 50 μm and 300 μm above planar copper-coated aluminum electrodes. Laser-cooling and coherent operations are performed on both the planar and vertical motional modes. This architecture provides a platform for precision electric-field noise detection and trapping of vertical ion strings without excess micromotion and may have applications for scalable quantum computers with surface ion traps.
- Publication:
-
Review of Scientific Instruments
- Pub Date:
- September 2018
- DOI:
- 10.1063/1.5046527
- arXiv:
- arXiv:1807.06043
- Bibcode:
- 2018RScI...89i3102A
- Keywords:
-
- Quantum Physics;
- Physics - Atomic Physics