284 citations · 997 across the 12 of their papers we have counts for
12 papers
Improved limits on the coupling of ultralight bosonic dark matter to photons from optical atomic clock comparisons
M. Filzinger, S. Dörscher, R. Lange +6
We present improved constraints on the coupling of ultralight bosonic dark matter to photons based on long-term measurements of two optical frequency ratios. In these optical clock…
An Optical Atomic Clock Based on a Highly Charged Ion
Steven A. King, Lukas J. Spieß, Peter Micke +9
Optical atomic clocks are the most accurate measurement devices ever constructed and have found many applications in fundamental science and technology. The use of highly charged i…
Lifetime of the level in Yb for spontaneous emission of electric octupole radiation
R. Lange, A. A. Peshkov, N. Huntemann +3
We report a measurement of the radiative lifetime of the level of Yb that is coupled to the ground state via an electric octupole transition. Th…
Improved limits for violations of local position invariance from atomic clock comparisons
R. Lange, N. Huntemann, J. M. Rahm +6
We compare two optical clocks based on the SD electric quadrupole (E2) and the SF electric octupole (E3)…
Optical frequency ratio of a single-ion clock and a lattice clock
Sören Dörscher, Nils Huntemann, Roman Schwarz +6
We report direct measurements of the frequency ratio of the 642 THz -- electric octupole transition in and the 429 THz…
Coherent excitation of the highly forbidden electric octupole transition in Yb
Henning A. Fürst, Chih-Han Yeh, Dimitri Kalincev +7
We report on the first coherent excitation of the highly forbidden electric octupole (E3) transition in a single trapped Yb ion, an…
Coherent suppression of tensor frequency shifts through magnetic field rotation
R. Lange, N. Huntemann, C. Sanner +4
We introduce a scheme to coherently suppress second-rank tensor frequency shifts in atomic clocks, relying on the continuous rotation of an external magnetic field during the free…
Generalized excitation of atomic multipole transitions by twisted light modes
S. A. -L. Schulz, A. A. Peshkov, R. A. Müller +5
A theoretical study is performed for the excitation of a single atom localized in the center of twisted light modes. Here we present the explicit dependence of excitation rates on…
Search for transient variations of the fine structure constant and dark matter using fiber-linked optical atomic clocks
B. M. Roberts, P. Delva, A. Al-Masoudi +51
We search for transient variations of the fine structure constant using data from a European network of fiber-linked optical atomic clocks. By searching for coherent variations in…
Optical clock comparison test of Lorentz symmetry
Christian Sanner, Nils Huntemann, Richard Lange +4
Questioning the presumably most basic assumptions about the structure of space and time has revolutionized our understanding of Nature. State-of-the-art atomic clocks make it possi…
Laser-controlled adaptive optic for beam quality enhancement in a multipass thin disk amplifier
Richard Lange, Daniel Kolbe
We devise a laser-controlled adaptive optical element which operates intracavity under high intensity radiation. This element substitutes a conventional mechanically deformable mir…
Auto-Balanced Ramsey Spectroscopy
Christian Sanner, Nils Huntemann, Richard Lange +2
We devise a perturbation-immune version of Ramsey's method of separated oscillatory fields. Spectroscopy of an atomic clock transition without compromising the clock's accuracy is…