Physics – Quantum Physics
Scientific paper
2007-07-13
Physics
Quantum Physics
4 pages, 4 figures, minor changes to commentary and references
Scientific paper
10.1103/PhysRevA.77.021401
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.
Champenois Caroline
Drewsen Michael
Hendricks R. J.
Knoop Martina
Sørensen Jens L.
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