Single electrons in a dual-plane printed-circuit-board Penning trap

Zirui Fang; Benedict A. D. Sukra; Xing Fan

doi:10.1103/k25f-9spd

Single electrons in a dual-plane printed-circuit-board Penning trap

Zirui Fang ¹, Benedict A. D. Sukra ², and Xing Fan ^1,3,*

¹Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
²Center for Fundamental Physics, Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA
³Harvard-MIT Center for Ultracold Atoms, Cambridge, Massachusetts 02138, USA

^*Contact author: xingfan@g.harvard.edu

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Phys. Rev. Applied 26, 044055 – Published 20 October, 2026

DOI: https://doi.org/10.1103/k25f-9spd

Abstract

We demonstrate single-electron trapping and detection in a dual-plane printed-circuit-board Penning trap. We have performed deterministic single-electron loading, achieved a axial damping rate of $γ_{z} / (2 π) = 18 (1) Hz$ , measured the axial temperature, and measured the magnetron-radius growth rate at magnetic fields below 0.15 T. These results establish a practical platform for dual-plane Penning traps.

Physical Review Applied

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Single electrons in a dual-plane printed-circuit-board Penning trap

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Single electrons in a dual-plane printed-circuit-board Penning trap

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