The worldwide most precise and most stable transportable optical clock
„With an uncertainty of 7.4 x 10−17 our transportable optical strontium lattice clock has come as close to the best stationary optical clocks as necessary for good clock comparisons," says work group leader Christian Lisdat.
More information can be found on the website of the Physikalisch-Technische Versuchsanstalt.
The abstract has been published on February 13, 2017 in Physical Review Letters:
S. B. Koller, J. Grotti, S. Vogt, A. Al-Masoudi, S. Dörscher, S. Häfner, U. Sterr, C. Lisdat: A transportable optical lattice clock with 7 × 10−17 uncertainty. Phys. Rev. Lett. 118, 073601 (2017)
The importance of the paper was emphasized in an additional comment on the publication: http://physics.aps.org/articles/v10/11