Circumventing Detector Backaction on a Quantum Cyclotron

X. Fan*, G. Gabrielse*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


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 line shapes 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.

Original languageEnglish (US)
Article number070402
JournalPhysical review letters
Issue number7
StatePublished - Feb 18 2021

ASJC Scopus subject areas

  • General Physics and Astronomy


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