J. Keller

collaborators

2 papers

physics.atom-ph2025

High-accuracy multi-ion spectroscopy with mixed-species Coulomb crystals

J. Keller, H. N. Hausser, I. M. Richter +14

Multi-ion optical clocks offer the possibility of overcoming the low signal-to-noise ratio of single-ion clocks, while still providing low systematic uncertainties. We present simu…

physics.atom-ph2025

$^{115}$ In $^{+}$ - $^{172}$ Yb $^{+}$ Coulomb crystal clock with $2.5 \times 1 0^{- 18}$ systematic uncertainty

H. N. Hausser, J. Keller, T. Nordmann +17

We present a scalable mixed-species Coulomb crystal clock based on the $^{1} S_{0}$ $\leftrightarrow$ $^{3} P_{0}$ transition in $^{115}$ In $^{+}$ . $^{172}$ Yb $^{+}$ ions are co-trapped and used f…

High-accuracy multi-ion spectroscopy with mixed-species Coulomb crystals

115In+-172Yb+ Coulomb crystal clock with 2.5×10−18 systematic uncertainty

$^{115}$ In $^{+}$ - $^{172}$ Yb $^{+}$ Coulomb crystal clock with $2.5 \times 1 0^{- 18}$ systematic uncertainty