activity
20202026
most citedOptical clocks based on the Cf and Cf ions

42 citations · 93 across the 9 of their papers we have counts for

collaborators

8 papers

physics.atom-ph2026

Characterization of rf field-induced a.c. Zeeman shift in multi-level highly charged ions

Shuying Chen, Lukas J. Spieß, Alexander Wilzewski +3

Characterization of the trap rf induced a.c. Zeeman shift is essential for achieving high accuracy in optical ion clocks. In this work, we demonstrate the experimental characteriza…

physics.atom-ph2025★ 1 cited

Coulomb crystallization of xenon highly charged ions in a laser-cooled Ca+ matrix

Leonid Prokhorov, Aaron A. Smith, Mingyao Xu +17

We report on the sympathetic cooling and Coulomb crystallization of xenon highly charged ions (HCIs) with laser-cooled Ca ions. The HCIs are produced in a compact electron beam…

physics.atom-ph2025★ 1 cited

Landé factor measurement of Ti using simultaneous co-magnetometry and quantum logic spectroscopy

Till Rehmert, Maximilian J. Zawierucha, Kai Dietze +6

The use of atomic systems as accurate magnetic field probes requires precise characterization of the particle's magnetic properties. Insufficient knowledge of the spatial and tempo…

quant-ph2025

Line search by quantum logic spectroscopy enhanced with squeezing and statistical tests

Ivan Vybornyi, Shuying Chen, Lukas J. Spieß +2

In quantum logic spectroscopy, internal transitions of trapped ions and molecules can be probed by measuring the motional displacement caused by an applied light field of variable…

physics.atom-ph2025★ 7 cited

Excited-state magnetic properties of carbon-like

Lukas J. Spieß, Shuying Chen, Alexander Wilzewski +13

We measured the -factor of the excited state in ion to be with a relative uncertainty of . The magnetic field…

physics.atom-ph2025

Finding the ultra-narrow electric quadrupole transition in Ni ion for an optical clock

Charles Cheung, Sergey G. Porsev, Dmytro Filin +7

The Ni ion features an electronic transition with a natural width of only 8 mHz, allowing for a highly stable optical clock. We predict that the energy of this strongly for…

physics.atom-ph2024

Identification of highly-forbidden optical transitions in highly charged ions

Shuying Chen, Lukas J. Spieß, Alexander Wilzewski +6

Optical clocks represent the most precise experimental devices, finding application in fields spanning from frequency metrology to fundamental physics. Recently, the first highly c…

physics.atom-ph2020★ 42 cited

Optical clocks based on the Cf and Cf ions

S. G. Porsev, U. I. Safronova, M. S. Safronova +4

Recent experimental progress in cooling, trapping, and quantum logic spectroscopy of highly-charged ions (HCIs) made HCIs accessible for high resolution spectroscopy and precision…