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

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          Abstract

          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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          Shift ofS122hyperfine splittings due to blackbody radiation

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            Sub-Hertz Optical Frequency Comparisons between Two TrappedYb+171Ions

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              Multipolar theory of black-body radiation shift of atomic energy levels and its implications for optical lattice clocks

              , (2006)
              A black-body radiation (BBR) shifts of (nsnp ^3P_0) - (ns^2 ^1S_0) clock transition in divalent atoms Mg, Ca, Sr, and Yb are evaluated. A theory of multipolar BBR shifts is developed and its implications are discussed. At room temperatures, the resulting uncertainties in the BBR shifts are relatively large and substantially affect the projected 10^{-18} fractional accuracy of the optical-lattice-based clocks.
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                Author and article information

                Journal
                14 November 2006
                2006-12-22
                Article
                physics/0611125
                92dc87e0-e84c-431f-88ee-64c0d1e0a972
                History
                Custom metadata
                4 pages, 1 figure, contributed to Proc. EFTF 2006, references and affiliations updated
                physics.atom-ph

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