120 citations · 358 across the 9 of their papers we have counts for
7 papers · 1 filter
Sub-Doppler cooling of bosonic strontium in a two-color MOT
Milán János Negyedi, Shubha Deutschle, Florian Jessen +2
We report a two-color magneto-optical trap that continuously operates on the and transitions in $\math…
Observation of the motional Stark shift in low magnetic fields
Manuel Kaiser, Jens Grimmel, Lara Torralbo-Campo +5
We report on the observation of the motional Stark effect of highly excited Rb Rydberg atoms moving in the presence of a weak homogeneous magnetic field in a vapor cell. Emp…
Measurement and numerical calculation of Rubidium Rydberg Stark spectra
Jens Grimmel, Markus Mack, Florian Karlewski +4
We report on the measurement of Stark shifted energy levels of Rb Rydberg atoms in static electric fields by means of electromagnetically induced transparency (EIT). Electri…
Trapping of ultra cold atoms in a 3He/4He dilution refrigerator
F. Jessen, M. Knufinke, S. C. Bell +13
We describe the preparation of ultra cold atomic clouds in a dilution refrigerator. The closed cycle 3He/4He cryostat was custom made to provide optical access for laser cooling, o…
Manipulation and coherence of ultra-cold atoms on a superconducting atom chip
S. Bernon, H. Hattermann, D. Bothner +8
The coherence of quantum systems is crucial to quantum information processing. While it has been demonstrated that superconducting qubits can process quantum information at microel…
Detrimental adsorbate fields in experiments with cold Rydberg gases near surfaces
H. Hattermann, M. Mack, F. Karlewski +3
We observe the shift of Rydberg levels of rubidium close to a copper surface when atomic clouds are repeatedly deposited on it. We measure transition frequencies of rubidium to S a…
Measurement of absolute transition frequencies of 87Rb to nS and nD Rydberg states by means of electromagnetically induced transparency
Markus Mack, Florian Karlewski, Helge Hattermann +4
We report the measurement of absolute excitation frequencies of 87Rb to nS and nD Rydberg states. The Rydberg transition frequencies are obtained by observing electromagnetically i…