419 citations
- Aalto UniversityFI27 papers
- VTT Technical Research Centre of FinlandFI21 papers
- Physikalisch-Technische BundesanstaltDE11 papers
- RIKEN Advanced Science InstituteJP6 papers
- ETH ZurichCH5 papers
- Stony Brook UniversityUS5 papers
- University of HelsinkiFI5 papers
- National Physical LaboratoryGB4 papers
- Leibniz University HannoverDE3 papers
- National Research University Higher School of EconomicsRU3 papers
- Centre National de la Recherche ScientifiqueFR2 papers
- Český metrologický institutCZ2 papers
59 papers
Sr optical clock with systematic uncertainty and measurement of its absolute frequency with uncertainty
T. Lindvall, T. Fordell, K. J. Hanhijärvi +4
We report on a Sr single-ion optical clock with an estimated fractional systematic uncertainty of . The low uncertainty is enabled by small rf loss…
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…
Noise-induced servo errors in optical clocks utilizing Rabi interrogation
T. Lindvall, A. E. Wallin, K. J. Hanhijärvi +1
We show that in optical clocks based on Rabi interrogation, both laser-frequency and magnetic-field flicker () noise with zero mean can lead to servo errors at the …
Graphene-Quantum Dot Hybrid Photodetectors from 200 mm Wafer Scale Processing
Sha Li, Zhenxing Wang, Bianca Robertz +14
A 200 mm processing platform for the large-scale production of graphene field-effect transistor-quantum dot (GFET-QD) hybrid photodetectors is demonstrated. Comprehensive statistic…
Evaluation of a Sr optical clock with a direct measurement of the blackbody radiation shift and determination of the clock frequency
M. Steinel, H. Shao, M. Filzinger +7
We report on an evaluation of an optical clock that uses the transition of a single Sr ion as the reference. In con…
High-Accuracy Determination of Paul-Trap Stability Parameters for Electric-Quadrupole-Shift Prediction
T. Lindvall, K. J. Hanhijärvi, T. Fordell +1
The motion of an ion in a radiofrequency (rf) Paul trap is described by the Mathieu equation and the associated stability parameters that are proportional to the rf and dc electric…