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High-accuracy optical clocks based on group 16-like highly charged ions



Saleh Allehabi, Samuel Brewer, Vladimir Dzuba, Victor Flambaum, Kyle Beloy


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 3PJ fi ne structure manifold exhibits irregular (nonmonotonic in J) energy ordering for large enough ionization degree. We consider the 3P2->3P0 (ground to fi rst-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.
Physical Review A


atomic clock, atomic frequency standard, optical clock, optical frequency standard, highly charged ion, fine structure


Allehabi, S. , Brewer, S. , Dzuba, V. , Flambaum, V. and Beloy, K. (2022), High-accuracy optical clocks based on group 16-like highly charged ions, Physical Review A, [online], (Accessed May 26, 2024)


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Created October 3, 2022, Updated April 27, 2023