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

Published

Author(s)

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

Abstract

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
Braunschweig,

Keywords

aluminum ion clock, atomic polarizability, blackbody shift
Created March 27, 2006, Updated January 27, 2020