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Measures magnetic anomalies and frequencies in isolated electrons, suggesting deeper quantum insights.
A sensitive frequency-shift technique is employed to monitor the magnetic quantum state of a single electron stored in a compensated Penning trap. The electron sees a weak parabolic magnetic pseudopotential in addition to the electric well, which causes the axial oscillation frequency to have a slight magnetic quantum state dependence. Transitions at both the spin-cyclotron-beat (anomaly) frequency and the cyclotron frequency have been measured in the same environment to yield a magnetic anomaly aₑ=(1159652410±200)×10^-12.
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Dyck et al. (1977) studied this question.
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