Collaborative Research Centre 1227/2, sub-project B03: Multi-ion spectroscopy for optical clocks

Project: Research

Access Project

Entanglement-enhanced optical ion clock
Dietze, K., Pelzer, L., Krinner, L., Dawel, F., Kramer, J., Spethmann, N. C. H., Kielinski, T., Hammerer, K., Stahl, K., Klose, J., Dörscher, S., Lisdat, C., Benkler, E. & Schmidt, P. O., 17 Feb 2026, In: Physical review letters. 136, 7, 073601.
Research output: Contribution to journal › Article › Research › peer review

Open Access
¹¹⁵In⁺ - ¹⁷²Yb⁺ Coulomb Crystal Clock with 2.5×10^-18 Systematic Uncertainty
Hausser, H. N., Keller, J., Nordmann, T., Bhatt, N. M., Kiethe, J., Liu, H., Richter, I. M., Von Boehn, M., Rahm, J., Weyers, S., Benkler, E., Lipphardt, B., Dörscher, S., Stahl, K., Klose, J., Lisdat, C., Filzinger, M., Huntemann, N., Peik, E. & Mehlstäubler, T. E., 16 Jan 2025, In: Physical Review Letters. 134, 2, 6 p., 023201.
Research output: Contribution to journal › Article › Research › peer review

Open Access
Finding the Ultranarrow P32→P30 Electric Quadrupole Transition in Ni12+ Ion for an Optical Clock
Cheung, C., Porsev, S. G., Filin, D., Safronova, M. S., Wehrheim, M., Spieß, L. J., Chen, S., Wilzewski, A., López-Urrutia, J. R. C. & Schmidt, P. O., 28 Aug 2025, In: Physical review letters. 135, 9, p. 93002 1 p., 093002.
Research output: Contribution to journal › Article › Research › peer review

Dataset for the publication "Coherent Excitation of the Highly Forbidden Electric Octupole Transition in 172Yb+"
Fürst, H. A. (Creator), Yeh, C.-H. (Related Person), Kalincev, D. (Creator), Kulosa, A. P. (Creator), Dreissen, L. (Related Person), Lange, R. (Creator), Benkler, E. (Related Person), Huntemann, N. (Related Person), Peik, E. (Related Person) & Mehlstäubler, T. (Related Person), Physikalisch-Technische Bundesanstalt (PTB), 21 Dec 2020
DOI: 10.7795/720.20201221, https://oar.ptb.de/resources/show/10.7795/720.20201221
Dataset