Extreme-ultraviolet spectroscopy using quantum logic: a feasibility study for the 1S-2S transition in singly-ionized helium

arXiv:2608.23516 · physics.atom-ph, quant-ph · Submitted 2026-08-24 · Read on arXiv

physics.atom-ph, quant-ph

Submitted: 2026-08-24

Updated: 2026-09-24

Terminology

• Ramsey-Comb Spectroscopy — 7× in this paper
• Adiabatic Passage — 4× in this paper · explained in 1 episode
• Accuracy — 3× in this paper · explained in 1 episode
• High-Harmonic Generation — 3× in this paper
• Stark Shift — 3× in this paper · explained in 2 episodes
• alpha — 3× in this paper · explained in 1 episode
• Decoupling — 2× in this paper · explained in 2 episodes
• Momentum transfer — 2× in this paper · explained in 2 episodes
• Quantization — 2× in this paper · explained in 12 episodes
• Rapid Adiabatic Passage — 2× in this paper
• Core — 1× in this paper · explained in 2 episodes
• Fidelity — 1× in this paper · explained in 2 episodes
• Signal-to-noise ratio (SNR) — 1× in this paper · explained in 2 episodes

Sources

• An Al$^+$ clock with $1.6\times10^{-18}$ systematic uncertainty and its frequency ratios
• A nuclear clock synchronized to 229 Th
• A thorium-229 optical nuclear clock with feedback loop
• Continuous-wave laser absorption spectroscopy of the Thorium-229 nucleus
• The helion charge radius from laser spectroscopy of muonic helium-3 ions

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