110 citations · 527 across the 20 of their papers we have counts for
20 papers
Single-atom detection with a quantum-controlled mechanical oscillator
Maxime Perdriat, Maciej Dziewiecki, Josef-Anton Agner +4
Using supersonic expansion, we create a time-gated, directional beam of Xe atoms with a narrow momentum distribution and detect their collisions with a levitated nanosphere cooled…
Combining laser cooling and Zeeman deceleration for precision spectroscopy in supersonic beams
Gloria Clausen, Laura Gabriel, Josef A. Agner +4
Precision spectroscopic measurements in atoms and molecules play an increasingly important role in chemistry and physics, e.g., to characterize structure and dynamics at long times…
Metrology in a two-electron atom: The ionization energy of metastable triplet helium ()
Gloria Clausen, Kai Gamlin, Josef A. Agner +2
Helium (He) is the ideal atom to perform tests of ab-initio calculations in two-electron systems that consider all known effects, including quantum-electrodynamics and nuclear-size…
Metrology of Rydberg states of the hydrogen atom
Simon Scheidegger, Josef A. Agner, Hansjürg Schmutz +1
We present a method to precisly measure the frequencies of transitions to high- Rydberg states of the hydrogen atom which are not subject to uncontrolled systematic shifts cause…
Imaging-assisted single-photon Doppler-free laser spectroscopy and the ionization energy of metastable triplet helium
Gloria Clausen, Simon Scheidegger, Josef A. Agner +2
Skimmed supersonic beams provide intense, cold, collision-free samples of atoms and molecules are one of the most widely used tools in atomic and molecular laser spectroscopy. High…
Observation of quantum capture in an ion-molecule reaction
Katharina Höveler, Johannes Deiglmayr, Josef A. Agner +3
In 1954, Vogt and Wannier (Phys. Rev. 95, 1190) predicted that the capture rate of a polarizable neutral atom or molecule by an ion should increase by a factor of two compared to t…