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arXiv · 2604.21342

Scalable surface ion trap design for magnetic quantum sensing and gradiometry

Qirat Iqbal·Altaf Hussain Nizamani
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Abstract

Magnetic quantum sensors based on trapped ions utilize properties of quantum mechanics which have optimized precision and beat current limits in sensor technology. Trapped ions are highly sensitive in a large span of signal ranging from DC or static B-field to the radiofrequency range in 100s of MHz and can attain the sensitivity in the range of pT to sub pT . They are tuneable to frequencies of interest and can be used as a lock-in frequency detector. This modelling and simulation based study presents an innovative design of Surface Paul Traps, enabling the use of trapped ions as ultra-sensitive sensors for magnetic field detection and precise measurement of magnetic field gradients at a sub-millimeter spatial resolution. The novel design features multiple trapping regions, allowing for the mapping of magnetic fields across various ion-trapping zones. The study demonstrates groundbreaking advancements in ion manipulation and confinement through innovative chip architecture.

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Qirat Iqbal, Altaf Hussain Nizamani. 2026-04-23. Scalable surface ion trap design for magnetic quantum sensing and gradiometry. https://doi.org/10.1016/j.physo.2024.100208

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