291 citations · 596 across the 8 of their papers we have counts for
8 papers
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…
Constraining the dense matter equation of state with new NICER mass-radius measurements and new chiral effective field theory inputs
Nathan Rutherford, Melissa Mendes, Isak Svensson +12
Pulse profile modeling of X-ray data from NICER is now enabling precision inference of neutron star mass and radius. Combined with nuclear physics constraints from chiral effective…
Deterministic preparation of a dual-species two-ion crystal
Maximilian J. Zawierucha, Till Rehmert, Jonas Keller +3
The demand for efficient preparation methods for dual-species ion crystals is rapidly expanding across quantum technology and fundamental physics applications with trapped ions. We…
Neutron star matter as a dilute solution of protons in neutrons
J. Keller, K. Hebeler, C. J. Pethick +1
Neutron stars contain neutron-rich matter with around 5% protons at nuclear saturation density. In this Letter, we consider equilibrium between bulk phases of matter based on asymm…
Controlling systematic frequency uncertainties at the level in linear Coulomb crystals
J. Keller, T. Burgermeister, D. Kalincev +5
Trapped ions are ideally suited for precision spectroscopy, as is evident from the remarkably low systematic uncertainties of single-ion clocks. The major weakness of these clocks…
Dynamics of topological defects in ion Coulomb crystals
Heather L. Partner, Ramil Nigmatullin, Tobias Burgermeister +5
We study experimentally and theoretically the properties of structural defects (kink solitons) in two-dimensional ion Coulomb crystals. We show how different types of kink solitons…
Symmetry Breaking and Topological Defect Formation in Ion Coulomb Crystals
Karsten Pyka, Jonas Keller, Heather L. Partner +9
Symmetry breaking phase transitions play an important role in nature. When a system traverses such a transition at a finite rate, its causally disconnected regions choose the new b…
Linear Paul trap design for an optical clock with Coulomb crystals
Norbert Herschbach, Karsten Pyka, Jonas Keller +1
We report on the design of a segmented linear Paul trap for optical clock applications using trapped ion Coulomb crystals. For an optical clock with an improved short-term stabilit…