Max Planck-RIKEN-PTB Center for
Time, Constants and Fundamental SymmetriesRecent Publications
2025
Probing New Bosons and Nuclear Structure with Ytterbium Isotope Shifts
M. Door, C.-H. Yeh, M. Heinz, F. Kirk, C. Lyu, T. Miyagi, J. C. Berengut, J. Bieroń, K. Blaum, L. S. Dreissen, S. Eliseev,
P. Filianin, M. Filzinger, E. Fuchs, H. A. Fürst, G. Gaigalas, Z. Harman, J. Herkenhoff, N. Huntemann, C. H. Keitel, K. Kromer,
D. Lange, A. Rischka, C. Schweiger, A. Schwenk, N. Shimizu, and T. E. Mehlstäubler
Phys. Rev. Lett. 134, 063002 (2025)
115In+ - 172Yb+ Coulomb Crystal Clock with 2.5 × 10−18 Systematic Uncertainty
H. N. Hausser, J. Keller, T. Nordmann, N. M. Bhatt, J. Kiethe, H. Liu, I. M. Richter, M. von Boehn, J. Rahm, S. Weyers,
E. Benkler, B. Lipphardt, S. Dörscher, K. Stahl, J. Klose, C. Lisdat, M. Filzinger, N. Huntemann, E. Peik, and T. E. Mehlstäubler
Phys. Rev. Lett. 134, 023201 (2025)
2024
Pr10+ as a candidate for a high-accuracy optical clock for tests of fundamental physics
S. G. Porsev, C. Cheung, M. S. Safronova, H. Bekker, N.-H. Rehbehn, J. R. Crespo López-Urrutia, and S. M. Brewer
Phys. Rev. A 110, 042823 (2024)
Countdown to a nuclear clock
A. Pálffy & J. R. Crespo López-Urrutia
Nature 633, 43-45 (2024)
Precision spectroscopy on 9Be overcomes limitations from nuclear structure
S. Dickopf, B. Sikora, A. Kaiser, M. Müller, S. Ulmer, V. A. Yerokhin, Z. Harman, C. H. Keitel, A. Mooser & K. Blaum
Nature 632, 757–761 (2024)
Orders of Magnitude Improved Cyclotron-Mode Cooling for Nondestructive Spin Quantum Transition Spectroscopy with Single
Trapped Antiprotons
B. M. Latacz, M. Fleck, J. I. Jäger, G. Umbrazunas, B. P. Arndt, S. R. Erlewein, E. J. Wursten, J. A. Devlin, P. Micke,
F. Abbass, D. Schweitzer, M. Wiesinger, C. Will, H. Yildiz, K. Blaum, Y. Matsuda, A. Mooser, C. Ospelkaus, C. Smorra, A. Soter,
W. Quint, J. Walz, Y. Yamazaki, and S. Ulmer (BASE Collaboration)
Phys. Rev. Lett. 133, 053201 (2024)
Image-Current Mediated Sympathetic Laser Cooling of a Single Proton in a Penning Trap Down to 170 mK Axial Temperature
C. Will, M. Wiesinger, P. Micke, H. Yildiz, T. Driscoll, S. Kommu, F. Abbass, B. P. Arndt, B. B. Bauer, S. Erlewein, M. Fleck,
J. I. Jäger, B. M. Latacz, A. Mooser, D. Schweitzer, G. Umbrazunas, E. Wursten, K. Blaum, J. A. Devlin, C. Ospelkaus, W. Quint,
A. Soter, J. Walz, C. Smorra, and S. Ulmer (BASE Collaboration)
Phys. Rev. Lett. 133, 023002 (2024)
Long-distance chronometric leveling with a portable optical clock
J. Grotti, I. Nosske, S. B. Koller, S. Herbers, H. Denker, L. Timmen, G. Vishnyakova, G. Grosche, T. Waterholter, A. Kuhl,
S. Koke, E. Benkler, M. Giunta, L. Maisenbacher, A. Matveev, S. Dörscher, R. Schwarz, A. Al-Masoudi, T. W. Hänsch, Th. Udem,
R. Holzwarth, and C. Lisdat
Phys. Rev. Appl. 21, L061001 (2024)