Tiranov, A., Green, E., Hermans, S., Liu, E., Chiossi, F., Serrano, D., Loiseau, P., Kumar, A. M., Bertaina, S., Faraon, A., Goldner, P. (2026). Sub-second spin and lifetime-limited optical coherences in 171Yb3+:CaWO4. Nature Communications. https://doi.org/10.1038/s41467-026-70534-9