Tony Finch on Nostr: there’s a table of candidate optical standards, ranging from 0.4 to 1.1 THz, using ...
there’s a table of candidate optical standards, ranging from 0.4 to 1.1 THz, using Hg or Al or Yb or Sr or Ca, in trapped ion optical clocks or neutral atom optical lattice clocks
it says 4 labs have Yb lattices and 3 have Sr lattices in production contributing to TAI
then one lab using oldskool rubidium, i’m pretty sure that’s the USNO’s rubidium fountains, which are unusual in (a) using rubidium instead of caesium and (b) operating continuously rather than for calibrating other clocks
Published at
2024-03-21 22:25:59Event JSON
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