论文标题
评估$ {}^{40} \ textrm {ca}^+ - {}^{27} \ textrm {al}^+$光学时钟的系统偏移评估
Evaluation of the systematic shifts of a ${}^{40}\textrm{Ca}^+-{}^{27}\textrm{Al}^+$ optical clock
论文作者
论文摘要
基于量子 - 逻辑的$ {}^{27} \ textrm {al}^+$光学时钟已在几个方案中被证明，因为辅助离子物种有不同的选择。在本文中，我们介绍了$ {}^{27} \ textrm {al}^+$ optical时钟的第一个详细评估以及由$ {}^}^{40} {40} {40} \ textrm {ca}^ca}^+$ $ ion的$ {}^{}^{27} \ textrm {al}^+$ optical Clock在同情冷却的情况下进行的第一个详细评估。 $ {}^{}^{40} \ textrm {ca}^+ - {}^{}^{27} \ textrm {al}^+ Quantum逻辑时钟的总体系统不确定性估计为$ 7.9 \ times 10^{-18} $，这是Quadratic of quadratic of quadratic of quadratic的限制。通过比较同一离子上两个反传播时钟梁的频率，我们测量的频率稳定性为$ 3.7 \ times 10^{ - 14} /\sqrtτ$。
Quantum-logic-based ${}^{27}\textrm{Al}^+$ optical clock has been demonstrated in several schemes as there are different choices of the auxiliary ion species. In this paper, we present the first detailed evaluation of the systematic shift and the total uncertainty of an ${}^{27}\textrm{Al}^+$ optical clock sympathetically cooled by a ${}^{40}\textrm{Ca}^+$ ion. The total systematic uncertainty of the ${}^{40}\textrm{Ca}^+ - {}^{27}\textrm{Al}^+$ quantum logic clock has been estimated to be $7.9 \times 10^{-18}$, which was mainly limited by the uncertainty of the quadratic Zeeman shift. By comparing the frequency of two counter-propagating clock beams on the same ion, we measured the frequency stability to be $3.7 \times 10^{-14} /\sqrtτ$.
