First standalone thorium-229 nuclear clock achieves shot-noise limited fractional frequency instability of 3×10⁻¹²/√τ and constrains ultralight dark matter couplings beyond previous atomic clock limits.
#ThoriumClock #OpticalClocks #PrecisionMetrology
#ThoriumClock #OpticalClocks #PrecisionMetrology
Thorium-229 Optical Nuclear Clock with Feedback Loop
arxiv.org
June 4, 2026 at 6:22 AM
First standalone thorium-229 nuclear clock achieves shot-noise limited fractional frequency instability of 3×10⁻¹²/√τ and constrains ultralight dark matter couplings beyond previous atomic clock limits.
#ThoriumClock #OpticalClocks #PrecisionMetrology
#ThoriumClock #OpticalClocks #PrecisionMetrology