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Circumventing Detector Backaction on a Quantum Cyclotron

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arxiv 2008.01898 v4 pith:O6QGKKP2 submitted 2020-08-05 physics.atom-ph hep-exquant-ph

classification physics.atom-phhep-exquant-ph
keywords cyclotronquantumbackactiondetectorfrequencystateaccuracybroadens
verification ladder T0 review T1 audit T2 compute T3 formal
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Detector backaction can be completely evaded when the state of a one-electron quantum cyclotron is detected, but it nonetheless significantly broadens the quantum-jump resonance lineshapes from which the cyclotron frequency can be deduced. This limits the accuracy with which the electron magnetic moment can be determined to test the standard model's most precise prediction. A steady state solution to a master equation, the first quantum calculation for the open quantum cyclotron system, illustrates a method to circumvent the detection backaction upon the measured frequency.

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