A planar ion trap chip with integrated structures for an adjustable magnetic field gradient

TL;DR

This paper introduces a segmented surface ion trap chip with integrated current-carrying structures that generate a magnetic field gradient, enabling individual ion addressing and advancing quantum information processing capabilities.

Contribution

The work presents a novel ion trap design with integrated magnetic field gradient structures, demonstrating effective ion trapping, magnetic field mapping, and individual ion addressing.

Findings

Successful trapping of 172Yb+ ion strings

Magnetic field gradients enable individual ion addressing

Trap performance characterized via RF-optical spectroscopy

Abstract

We present the design, fabrication, and characterization of a segmented surface ion trap with integrated current carrying structures. The latter produce a spatially varying magnetic field necessary for magnetic gradient induced coupling between ionic effective spins. We demonstrate trapping of strings of 172Yb+ ions, characterize the performance of the trap and map magnetic fields by radio frequency-optical double resonance spectroscopy. In addition, we apply and characterize the magnetic gradient and demonstrate individual addressing in a string of three ions using RF radiation.