T. Fordell

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physics.atom-ph2025

$^{88}$ Sr $^{+}$ optical clock with $7.9 \times 1 0^{- 19}$ systematic uncertainty and measurement of its absolute frequency with $9.8 \times 1 0^{- 17}$ uncertainty

T. Lindvall, T. Fordell, K. J. HanhijÃ¤rvi +4

We report on a $^{88}$ Sr $^{+}$ single-ion optical clock with an estimated fractional systematic uncertainty of $7.9 \times 1 0^{- 19}$ . The low uncertainty is enabled by small rf loss…

physics.atom-ph2025

Measurement of the Differential Static Scalar Polarizability of the $^{88}$ Sr $^{+}$ Clock Transition

T. Lindvall, K. J. HanhijÃ¤rvi, T. Fordell +1

We report on a precision measurement of the differential static scalar polarizability $I^ I^\pm_{0}$ of the $^{2} S_{1/2} \to^{2} D_{5/2}$ optical clock transition in the…

physics.atom-ph2025

Coordinated international comparisons between optical clocks connected via fiber and satellite links

Thomas Lindvall, Marco Pizzocaro, Rachel M. Godun +62

Optical clocks provide ultra-precise frequency references that are vital for international metrology as well as for tests of fundamental physics. To investigate the level of agreem…

88Sr+ optical clock with 7.9×10−19 systematic uncertainty and measurement of its absolute frequency with 9.8×10−17 uncertainty

Measurement of the Differential Static Scalar Polarizability of the 88Sr+ Clock Transition

Coordinated international comparisons between optical clocks connected via fiber and satellite links

$^{88}$ Sr $^{+}$ optical clock with $7.9 \times 1 0^{- 19}$ systematic uncertainty and measurement of its absolute frequency with $9.8 \times 1 0^{- 17}$ uncertainty

Measurement of the Differential Static Scalar Polarizability of the $^{88}$ Sr $^{+}$ Clock Transition