168 citations · 1.7k across the 44 of their papers we have counts for
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Improved isotope-shift-based bounds on bosons beyond the Standard Model through measurements of the DD interval in Ca
Cyrille Solaro, Steffen Meyer, Karin Fisher +3
We perform high-resolution spectroscopy of the dDdD interval in all stable even isotopes of Ca (A = 40, 42, 44, 46 and 48) with an accuracy…
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…
Decay rate measurement of the first vibrationally excited state of MgH in a cryogenic Paul trap
O. O. Versolato, M. Schwarz, A. K. Hansen +7
We present a method to measure the decay rate of the first excited vibrational state of simple polar molecular ions being part of a Coulomb crystal in a cryogenic linear Paul trap.…
Adiabatic cooling of a single trapped ion
Gregers Poulsen, Michael Drewsen
We present experimental results on adiabatic cooling of a single 40Ca+ ion in a linear radiofrequency trap. After a period of laser cooling, the secular frequency along the rf-fiel…
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…
Probing isotope effects in chemical reactions using single ions
Peter F. Staanum, Klaus Hoejbjerre, Roland Wester +1
Isotope effects in reactions between Mg+ in the 3p 2P3/2 excited state and molecular hydrogen at thermal energies are studied through single reaction events. From only ~250 reactio…
Probabilistic state preparation of a single molecular ion by projection measurement
I. S. Vogelius, L. B. Madsen, M. Drewsen
We show how to prepare a single molecular ion in a specific internal quantum state in a situation where the molecule is trapped and sympathetically cooled by an atomic ion and wher…
Rotational cooling of heteronuclear molecular ions with ^1-Sigma, ^2-Sigma, ^3-Sigma and ^2-Pi electronic ground states
I. S. Vogelius, L. B. Madsen, M. Drewsen
The translational motion of molecular ions can be effectively cooled sympathetically to translational temperatures below 100 mK in ion traps through Coulomb interactions with laser…
Rotational cooling of molecules using lamps
I. S. Vogelius, L. B. Madsen, M. Drewsen
We investigate theoretically the application of tailored incoherent far-infrared fields in combination with laser excitation of a single rovibrational transition for rotational coo…
Isotope shifts of the 4s2 1S0 -> 4s5p 1P1 transition and hyperfine splitting of the 4s5p 1P1 state in calcium
A. Mortensen, J. J. T. Lindballe, I. S. Jensen +3
Using a technique based on production of ion Coulomb crystals, the isotope shifts of the 4s2 1S0 -> 4s5p 1P1 transition for all naturally occurring isotopes of calcium as well as t…
Lifetime measurement of the metastable 3d 2D5/2 state in the 40Ca+ ion using the shelving technique on a few-ion string
Peter Staanum, Inger S. Jensen, Randi G. Martinussen +2
We present a measurement of the lifetime of the metastable 3d 2D5/2 state in the 40Ca+ ion, using the so-called shelving technique on a string of five Doppler laser-cooled ions in…