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arXiv 0709.0149quant-ph
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~(43)Ca ~+离子光频标的黑体辐射漂移

Blackbody radiation shift in a 43Ca+ ion optical frequency standard

Bindiya Arora, M. S. Safronova, Charles W. Clark

摘要:

基于43 Ca+光频标的前景,我们计算了4s_1/2-3d_5/2时钟跃迁的黑体辐射(BBR)位移,它是不确定度预算的主要组成部分。计算基于相对论全阶单-双方法,其中Dirac-Fock波函数的所有单和双激发都包括在微扰理论的所有阶次中。对主要贡献进行了额外的计算,以评估一些遗漏的高阶修正和估计最终结果的不确定性。对于该转变获得的BBR移位为0.38(1)Hz。计算了3d_5/2能级的张量极化率,并对其不确定度进行了评定。我们的结果与其他计算进行了比较。

英文摘要:

Motivated by the prospect of an optical frequency standard based on 43Ca+, we calculate the blackbody radiation (BBR) shift of the 4s_1/2-3d_5/2 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 all orders 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 3d_5/2 level is also calculated and its uncertainty is evaluated as well. Our results are compared with other calculations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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