An all-optical time scale built from cryogenic silicon cavities and an iodine clock, steered by a Sr optical clock, maintains sub-1e-16 relative instability and <100 ps total difference over 20 days.
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Phase-continuous comparison of three all-optical time scales over 20 days
An all-optical time scale built from cryogenic silicon cavities and an iodine clock, steered by a Sr optical clock, maintains sub-1e-16 relative instability and <100 ps total difference over 20 days.