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



Till P. Rosenband, Wayne M. Itano, Piet Schmidt, David Hume, Jeroen Koelemeij, James C. Bergquist, David J. Wineland


The differential polarizability, due to near-infrared light at 1126 nm, of the 27Al+1S03P0 transition is measured to be {Δ}α = (1.6 ± x 10-31 m3, where {Δ}α = αP - αS is the difference between the excited and ground state polarizabilities. This measurement is combined with expeimental oscillator strengths to extrapolate the differential static polarizability of the clock transition as {Δ}α(0) = 4πε0 x (1.5 ± 0.5) x 10-31m3. The resulting room temperature blackbody shift of {Δ}Ņ / Ņ = -8(3)x1018 is the lowest known shift of all atomic transistions under consideration for optical frequency standards. A method is presented to estimate the differntial static polarizability of an optical transition, from a differential Stark shift measurement.
Proceedings Title
Proc. EFTF Conf.
Conference Dates
March 27-30, 2006
Conference Location


aluminum ion clock, atomic polarizability, blackbody shift


Rosenband, T. , Itano, W. , Schmidt, P. , Hume, D. , Koelemeij, J. , Bergquist, J. and Wineland, D. (2006), Blackbody radiation shift of the <sup>27</sup>Al<sup>+</sup> <sup>1</sup>S<sub>0</sub> - <sup>3</sup>P<sub>0</sub> transition, Proc. EFTF Conf., Braunschweig, , [online], (Accessed June 24, 2024)


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Created March 27, 2006, Updated January 27, 2020