11 papers · 1 filter
Interspecies clock comparison below uncertainty with a transportable clock
Chetan Vishwakarma, Ingo Nosske, Tim Lücke +6
We report a measurement of the optical frequency ratio between the -- electric-octupole (E3) transition of Yb and…
An Al clock with systematic uncertainty and its frequency ratios
Fabian Dawel, Johannes Kramer, Derwell Drapier +15
Advances in optical clocks motivate a redefinition of the second, requiring rigorous evaluations of systematic uncertainties and robust consistency among the clocks. Here, we repor…
International Optical Clock Comparison Using the European Optical Fiber Network
Marco Pizzocaro, Clara Zyskind, Anne Amy-Klein +41
Optical clocks have achieved remarkable estimated fractional frequency uncertainties reaching the level and below, enabling applications in fundamental physics, general…
A high-stability optical clock based on a continuously ground-state cooled Al ion without compromising its accuracy
Fabian Dawel, Lennart Pelzer, Kai Dietze +12
Single ion optical clocks have shown systematic frequency uncertainties below , but typically require more than one week of averaging to achieve a corresponding statistic…
Transportable strontium lattice clock with blackbody radiation shift uncertainty
I. Nosske, C. Vishwakarma, T. Lücke +6
We describe a transportable optical lattice clock based on the transition of lattice-trapped Sr atoms with a total systematic u…
Entanglement-enhanced optical ion clock
Kai Dietze, Lennart Pelzer, Ludwig Krinner +11
Entangled states hold the promise of improving the precision and accuracy of quantum sensors. We experimentally demonstrate that spectroscopy of an optical clock transition using e…