Blackbody radiation shift of the 27Al+ 1S0 - 3P0 transition

Details Blackbody radiation shift of the 27Al+ 1S0 - 3P0 transition Blackbody radiation shift of the 27Al+ 1S0 - 3P0 transition

2006-11-14

arxiv.org/abs/physics/0611125v2

Physics

Atomic Physics

4 pages, 1 figure, contributed to Proc. EFTF 2006, references and affiliations updated

Scientific paper

The differential polarizability, due to near-infrared light at 1126 nm, of the 27Al+ 1S0 -> 3P0 clock transition is measured to be 4\pi\epsilon_0 x (1.6 +/- 0.5) x 10^{-31} m^3. This measurement is combined with experimental oscillator strengths to extrapolate the differential static polarizability of the clock transition as 4\pi\epsilon_0 x (1.5 +/- 0.5) x 10^{-31} m^3. The resulting room temperature blackbody fractional frequency shift of -8(3) x 10^{-18} is the lowest known shift of all atomic transitions under consideration for optical frequency standards. A method is presented to estimate the differential static polarizability of an optical transition, from a differential light shift measurement.

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