546 citations · 1.9k across the 25 of their papers we have counts for
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Robust optical clock transitions in trapped ions
Nati Aharon, Nicolas Spethmann, Ian D. Leroux +2
We present a novel method for engineering an optical clock transition that is robust against external field fluctuations and is able to overcome limits resulting from field inhomog…
On-Line Estimation of Local Oscillator Noise and Optimisation of Servo Parameters in Atomic Clocks
Ian D. Leroux, Nils Scharnhorst, Stephan Hannig +4
For atomic frequency standards in which fluctuations of the local oscillator (LO) frequency are the dominant noise source, we examine the role of the servo algorithm that predicts…
A tunable low-drift laser stabilized to an atomic reference
Tobias Leopold, Lisa Schmöger, Stefanie Feuchtenbeiner +6
We present a laser system with a linewidth and long-term frequency stability at the 50 kHz level. It is based on a Ti:Sapphire laser emitting radiation at 882 nm which is reference…
Quantum Algorithmic Readout in Multi-Ion Clocks
Marius Schulte, Niels Lörch, Ian D. Leroux +2
Optical clocks based on ensembles of trapped ions offer the perspective of record frequency uncertainty with good short-term stability. Most suitable atomic species lack closed tra…
Sub-Micron Positioning of Trapped Ions with Respect to the Absolute Center of a Standing Wave Cavity Field
Rasmus B. Linnet, Ian D. Leroux, Aurélien Dantan +1
We demonstrate that it is possible, with sub-micron precision, to locate the absolute center of a Fabry-Pérot resonator oriented along the rf-field-free axis of a linear Paul trap…
Precision spectroscopy by photon-recoil signal amplification
Yong Wan, Florian Gebert, Jannes B. Wübbena +7
Precision spectroscopy of atomic and molecular ions offers a window to new physics, but is typically limited to species with a cycling transition for laser cooling and detection. Q…
Pinning an Ion with an Intracavity Optical Lattice
Rasmus B. Linnet, Ian D. Leroux, Mathieu Marciante +2
We report one-dimensional pinning of a single ion by an optical lattice. The lattice potential is produced by a standing-wave cavity along the rf-field-free axis of a linear Paul t…
Collective state measurement of mesoscopic ensembles with single-atom resolution
Hao Zhang, Robert McConnell, Senka Ćuk +4
For mesoscopic ensembles containing 100 or more atoms we measure the total atom number and the number of atoms in a specific hyperfine state with single-atom resolution. The measur…