Doppler cooling of calcium ions using a dipole-forbidden transition
arXiv:0707.1969 · doi:10.1103/PhysRevA.77.021401
Abstract
Doppler cooling of calcium ions has been experimentally demonstrated using the S1/2 to D5/2 dipole-forbidden transition. Scattering forces and fluorescence levels a factor of 5 smaller than for usual Doppler cooling on the dipole allowed S1/2 to P1/2 transition have been achieved. Since the light scattered from the ions can be monitored at (violet) wavelengths that are very different from the excitation wavelengths, single ions can be detected with an essentially zero background level. This, as well as other features of the cooling scheme, can be extremely valuable for ion trap based quantum information processing.
arXiv comment4 pages, 4 figures, minor changes to commentary and references
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- Proposal for laser-cooling of rare-earth ions
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- Systematic study of tunable laser cooling for trapped-ion experiments
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