222 citations · 726 across the 13 of their papers we have counts for
13 papers
An Accessible Formulation for Defining the SI Second Based on Multiple Atomic Transitions
Claudio Eligio Calosso, Nils Nemitz
The atomic transitions employed in the best of today's optical clocks are a strong foundation for the upcoming redefinition of the SI second. Including multiple transitions in the…
Absolute frequency of at uncertainty by reference to remote Primary Frequency Standards
Nils Nemitz, Tadahiro Gotoh, Fumimaru Nakagawa +4
The optical lattice clock NICT-Sr1 regularly reports calibration measurements of the international timescale TAI. By comparing measurement results to the reports of eight Primary F…
Frequency ratio of an In ion clock and a Sr optical lattice clock
Nozomi Ohtsubo, Ying Li, Nils Nemitz +4
We report on the first frequency ratio measurement of an In+ single ion clock and a Sr optical lattice clock. A hydrogen maser serves as a reference oscillator to me…
Modeling light shifts in optical lattice clocks
Nils Nemitz, Asbjørn Arvad Jørgensen, Ryotatsu Yanagimoto +2
We present an extended model for the lattice-induced light shifts of the clock frequency in optical lattice clocks, applicable to a wide range of operating conditions. The model ex…
Decomposed description of Ramsey spectra under atomic interactions
Ryotatsu Yanagimoto, Nils Nemitz, Filippo Bregolin +1
We introduce a description of Ramsey spectra under atomic interactions as a sum of decomposed components with differing dependence on interaction parameters. This description enabl…
Frequency ratio of Yb and Sr clocks with uncertainty at 150 s averaging time
Nils Nemitz, Takuya Ohkubo, Masao Takamoto +4
Transition frequencies of atoms and ions are among the most accurately accessible quantities in nature, playing important roles in pushing the frontiers of science by testing funda…