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Article Dans Une Revue Physical Review Letters Année : 2009

Absolute Frequency Measurement of the Ca+40 4sS1/22-3dD5/22 Clock Transition

Résumé

We report on the first absolute transition frequency measurement at the 10-15 level with a single, laser-cooled Ca+40 ion in a linear Paul trap. For this measurement, a frequency comb is referenced to the transportable Cs atomic fountain clock of LNE-SYRTE and is used to measure the Ca+40 4sS1/22-3dD5/22 electric-quadrupole transition frequency. After the correction of systematic shifts, the clock transition frequency nuCa+=411042129776393.2(1.0)Hz is obtained, which corresponds to a fractional uncertainty within a factor of 3 of the Cs standard. In addition, we determine the Landé g factor of the 3dD5/22 level to be g5/2=1.2003340(3).
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hal-03733118 , version 1 (19-08-2023)

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Michael Chwalla, J. Benhelm, K. Kim, G. Kirchmair, T. Monz, et al.. Absolute Frequency Measurement of the Ca+40 4sS1/22-3dD5/22 Clock Transition. Physical Review Letters, 2009, 102, pp.23002. ⟨10.1103/PhysRevLett.102.023002⟩. ⟨hal-03733118⟩
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