Davide Calonico
Viewpoint
Keeping Time with Light
An all-optical clock scheme could improve time metrology standards, taking an important step toward the redefinition of the second. Read More »
Viewpoint
Gauging the Temperature Sensitivity of a Nuclear Clock
Researchers have characterized the temperature-induced frequency shifts of a thorium-229 nuclear transition—an important step in establishing thorium clocks as next-generation frequency standards. Read More »