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Demonstration of a Spherical Penning Trap for Single Electrons

arXiv Physics Wednesday 03 June 2026, 04:00 UTC By Zirui Fang, Xing Fan 1 min read
Key Points

Announce Type: new 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.

arXiv:2606.03639v1 Announce Type: new 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.
Originally published by arXiv Physics Read original →

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