Arora, B.
, Safronova, M.
and Clark, C.
(2021),
Blackbody Radiation Shift in a <sup>43</sup>Ca<sup>+</sup> Ion Optical Frequency Standard, Physical Review Letters
(Accessed April 23, 2024)
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Blackbody Radiation Shift in a 43Ca+ Ion Optical Frequency Standard
Published
Author(s)
B Arora, M S. Safronova,
Abstract
Motivated by the prospect of an optical frequency standard based on 43Ca+, we calculate the blackbody radiation (BBR) shift of the 4s1/2 - 3d5/2 clock transition, which is a major component of the uncertainty budget. The calculations are based on the relativistic all-order single-double method where all single and double excitations of the Dirac-Fock wave function are included to allorders of perturbation theory. Additional calculations are conducted for the dominant contributions in order to evaluate some omitted high-order corrections and estimate the uncertainties of the final results. The BBR shift obtained for this transition is 0.38(1) Hz. The tensor polarizability of the 3d5/2 level is also calculated and its uncertainty is evaluated as well. Our results are compared withother calculations.Citation
Physical Review Letters
Pub Type
Journals
Keywords
atom trap, atomic clock, atomic structure, black-body optical frequency standard, calcium, polarizability, radiation, Stark effect
Citation
Created October 12, 2021