Demonstrates single-electron trapping and detection in a two-dimensionally scalable dual-plane PCB Penning trap with characterization of loading, damping, temperature, and magnetron growth.
Observation of individual spin quantum transitions of a single antiproton
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abstract
We report on the detection of individual spin quantum transitions of a single trapped antiproton in a Penning trap. The spin-state determination, which is based on the unambiguous detection of axial frequency shifts in presence of a strong magnetic bottle, reaches a fidelity of 92.1$\%$. Spin-state initialization with $>99.9\%$ fidelity and an average initialization time of 24 min are demonstrated. This is a major step towards an antiproton magnetic moment measurement with a relative uncertainty on the part-per-billion level.
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quant-ph 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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Single Electrons in a Dual-Plane Printed-Circuit-Board Penning Trap
Demonstrates single-electron trapping and detection in a two-dimensionally scalable dual-plane PCB Penning trap with characterization of loading, damping, temperature, and magnetron growth.