Recent progress in optical lattice clocks requires unprecedented precision in controlling systematic uncertainties at the 10(-18) level. Tuning of nonlinear light shifts is shown to reduce lattice-induced clock shift for a wide range of lattice intensity. Based on theoretical multipolar, nonlinear, anharmonic, and higher-order light shifts, we numerically demonstrate possible strategies for Sr, Yb, and Hg clocks to achieve lattice-induced systematic uncertainty below 1 x 10(-18).
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机译：光学晶格时钟的最新进展要求在控制10（-18）级别的系统不确定性方面达到前所未有的精度。显示了非线性光移的调整，可以在较大范围的晶格强度下减少晶格引起的时钟偏移。基于理论上的多极，非线性，非谐和高阶光移，我们以数字方式证明了Sr，Yb和Hg时钟实现低于1 x 10（-18）的晶格引起的系统不确定性的可能策略。
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