Absolute frequency measurement of the 40 Ca+ clock transition using a GNSS link to the SI second

arXiv:2609.15844 · physics.atom-ph, quant-ph · Submitted 2026-09-14 · Read on arXiv

physics.atom-ph, quant-ph

Submitted: 2026-09-14

Updated: 2026-09-17

Terminology

• Stark Shift — 12× in this paper · explained in 2 episodes
• Quantization — 4× in this paper · explained in 12 episodes
• Ac Stark Shifts — 3× in this paper · explained in 1 episode
• Accuracy — 3× in this paper · explained in 1 episode
• Ablation — 1× in this paper · explained in 1 episode
• Consistency — 1× in this paper · explained in 3 episodes
• Decode — 1× in this paper · explained in 2 episodes

Sources

• Direct comparison of multi-ion optical clocks based on $^{40}$Ca$^+$ and $^{88}$Sr$^+$
• Dual-Platform Precision Measurement of the 3 2D 5/2 to 4 2S 1/2 g-Factor Ratio in 40 Ca+

Related papers

• A nuclear clock synchronized to 229 Th
• Dual-Platform Precision Measurement of the 3 2D 5/2 to 4 2S 1/2 g-Factor Ratio in 40 Ca+
• Absolute frequency measurement of a 176 Lu+,(cubed D 1) standard against the NRC-FCs2 fountain with 2.6 times10-16 uncertainty
• Long-lived giant circular Rydberg atoms at room temperature
• Quasiperiodic nondipole ionization dynamics in the x-ray stabilization regime
• The PairInteraction Toolkit for Modeling Rydberg Physics in Alkali and Alkaline-Earth-Like Atoms