High-accuracy optical clocks based on group-16-like highly charged ions
High-accuracy optical clocks based on group-16-like highly charged ions
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DOI：
10.1103/physreva.106.043101
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发表时间：
2022-07
影响因子：
2.9
通讯作者：
Saleh O. Allehabi;S. Brewer;V. Dzuba;V. Flambaum;K. Beloy
中科院分区：
文献类型：
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作者：
Saleh O. Allehabi;S. Brewer;V. Dzuba;V. Flambaum;K. Beloy
我们发现类16族高电荷态离子中的激光可达跃迁是高精度光钟的候选者，包括类S、类Se和类Te系统。对于这类离子，对于足够大的电离度，基态结构流形表现出不规则的(非单调的)能量排序。我们考虑了基态到第一激发态的电四极跃迁，对几个原子性质进行了相对论多体计算，这对光钟的发展具有重要意义。所讨论的所有离子都适合在小型离子源中生产，并适合于单电荷离子的共振冷却和量子逻辑读出。
We identify laser-accessible transitions in group 16-like highly charged ions as candidates for high-accuracy optical clocks, including S-, Se-, and Te-like systems. For this class of ions, the ground $^{3}P_{J}$ fine structure manifold exhibits irregular (nonmonotonic in $J$) energy ordering for large enough ionization degree. We consider the $|^3P_2\rangle \longleftrightarrow |^3P_0\rangle$ (ground to first-excited state) electric quadrupole transition, performing relativistic many-body calculations of several atomic properties important for optical clock development. All ions discussed are suitable for production in small-scale ion sources and lend themselves to sympathetic cooling and quantum-logic readout with singly charged ions.