Thulium atoms show a 22 s Ramsey hyperfine coherence time and a 55 s dynamical-decoupling coherence time, with optical shelving into a 112 ms metastable state.
For a 2-ms π−pulse, the Rabi frequency is Ω = 2π× 250 Hz
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Coherence of Microwave and Optical Qubit Levels in Neutral Thulium
Thulium atoms show a 22 s Ramsey hyperfine coherence time and a 55 s dynamical-decoupling coherence time, with optical shelving into a 112 ms metastable state.