Cavity Control of a Single-Electron Quantum Cyclotron:\\Measuring the Electron Magnetic Moment

摘要

Measurements with a one-electron quantum cyclotron determine the electronmagnetic moment, given by $g/2 =1.001\,159\,652\,180\,73\,(28)\,[0.28~\textrm{ppt}]$, and the fine structureconstant, $\alpha^{-1}=137.035\,999\,084\,(51)\,[0.37~\textrm{ppb}]$. Briefannouncements of these measurements are supplemented here with a more completedescription of the one-electron quantum cyclotron and the new measurementmethods, a discussion of the cavity control of the radiation field, a summaryof the analysis of the measurements, and a fuller discussion of theuncertainties.