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Observation of individual spin quantum transitions of a single antiproton

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arxiv 1703.07096 v1 pith:6YA3BUA7 submitted 2017-03-21 physics.atom-ph

classification physics.atom-ph
keywords antiprotondetectionfidelityindividualinitializationmagneticquantumsingle
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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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  1. Single Electrons in a Dual-Plane Printed-Circuit-Board Penning Trap

    quant-ph 2026-06 unverdicted novelty 5.0 of 10

    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.

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