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arXiv · 2606.03639

Demonstration of a Spherical Penning Trap for Single Electrons

Zirui Fang·Xing Fan
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Abstract

A spherical Penning trap has well-separated, clean microwave resonances, making it attractive for precision measurements of the electron magnetic moment and for dark-photon and axion searches with trapped electrons. We demonstrate single-electron trapping in a spherical Penning trap and characterize its microwave resonance structure. The design, single-electron detection, microwave mode characterization, and advantages of this geometry are presented.

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Zirui Fang, Xing Fan. 2026-06-02. Demonstration of a Spherical Penning Trap for Single Electrons. https://arxiv.org/abs/2606.03639

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