103 citations · 587 across the 15 of their papers we have counts for
15 papers
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…
The phase boundary of superconducting niobium thin films with antidot arrays fabricated with microsphere photolithography
Daniel Bothner, Conrad Clauss, Elisabeth Koroknay +8
The experimental investigation of the -- phase boundary of superconducting niobium films with large area quasihexagonal hole arrays is reported. The hole arrays wer…
Magnetic hysteresis effects in superconducting coplanar microwave resonators
Daniel Bothner, Tobias Gaber, Matthias Kemmler +4
We performed transmission spectroscopy experiments on coplanar half wavelength niobium resonators at a temperature T=4.2 K. We observe not only a strong dependence of the quality f…
Reducing vortex losses in superconducting microwave resonators with microsphere patterned antidot arrays
D. Bothner, C. Clauss, E. Koroknay +8
We experimentally investigate the vortex induced energy losses in niobium coplanar waveguide resonators with and without quasihexagonal arrays of nanoholes (antidots), where large-…
Spectroscopy of a fractional Josephson vortex molecule
U. Kienzle, J. M. Meckbach, K. Buckenmaier +8
In long Josephson junctions with multiple discontinuities of the Josephson phase, fractional vortex molecules are spontaneously formed. At each discontinuity point a fractional Jos…
Improving the performance of superconducting microwave resonators in magnetic fields
Daniel Bothner, Tobias Gaber, Matthias Kemmler +2
The operation of superconducting coplanar waveguide cavities, as used for circuit quantum electrodynamics and kinetic inductance detectors, in perpendicular magnetic fields normall…