2020/08/31 by Xing Fan, G. Gabrielse, Gerald Gabrielse · 1 citation
Computer Science · Physics and Astronomy · #Atomic and Subatomic Physics Research #Atomic physics #Cyclotron #Detector #Electron #Mechanical and Optical Resonators #Optics #Physics #Quantum #Quantum Information and Cryptography #Quantum electrodynamics #Quantum limit #Quantum mechanics #hep-ex #physics.atom-ph #quant-ph
paper · pdf · doi:10.1103/physrevlett.126.070402
published as Phys. Rev. Lett. 126, 070402 (2021) · 6 pages, 2 figures
arxiv created 2020/12/10 · openalex publication_date 2021/02/18 · arxiv updated 2021/02/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.