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• W2957019721 abstract "We study the probability distribution of an atomic ion being laser-cooled in a periodically-driven Paul trap using a Floquet approach to the semiclassical photon scattering dynamics. We show that despite the microscopic nonequilibrium forces, a stationary thermal-like exponential distribution can be obtained in the Hamiltonian action, or equivalently in the number of quanta (phonons) of the motion linearized about the zero of the potential. At the presence of additional stray electric fields, the ion is pushed from the origin of the potential and set into a large-amplitude driven oscillation, and above a threshold amplitude of such excess micromotion, the action distribution of excitations about the driven oscillation broadens and becomes distinctly nonthermal. We find that by a proper choice of the laser detuning the distribution can be made exponential again, with a mean phonon number close to that of the Doppler cooling limit. We derive a relation allowing to deduce just from the experimentally observable photon scattering rate both the required detuning for optimal cooling and the final mean phonon number. These results are important for quantum information processing and other applications, and in particular the derived approach can be applied to crystals of trapped ions in planar configurations, where the driven motion of ions is unavoidable." @default.
• W2957019721 created "2019-07-23" @default.
• W2957019721 creator A5083094476 @default.
• W2957019721 date "2019-07-16" @default.
• W2957019721 modified "2023-09-25" @default.
• W2957019721 title "Tuning nonthermal distributions to thermal ones in time-dependent Paul traps" @default.
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• W2957019721 doi "https://doi.org/10.1103/physreva.100.013413" @default.
• W2957019721 hasPublicationYear "2019" @default.
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