Nature, Published online: 16 September 2026; doi:10.1038/s41586-026-11011-7
Absorption spectroscopy of thorium-229 nuclear excited states in a thorium-doped calcium fluoride crystal demonstrates a path towards a much more efficient way to build a highly stable and robust solid-state optical nuclear clock.Continuous-wave laser absorption spectroscopy of the thorium-229 nucleus
Nature, Published online: 16 September 2026; doi:10.1038/s41586-026-11011-7Absorption spectroscopy of thorium-229 nuclear excited states in a thorium-doped calcium fluoride crystal demonstrates a path towards a much more efficient way …