48 citations · 121 across the 5 of their papers we have counts for
5 papers
Determination of quantum defect for the Rydberg P series of Ca II
Arezoo Mokhberi, Jonas Vogel, Justas Andrijauskas +3
We present an experimental investigation of the Rydberg 23 P state of laser-cooled Ca ions in a radiofrequency ion trap. Using micromotion sideband spectroscopy…
Towards Rydberg quantum logic with trapped ions
P. Bachor, T. Feldker, J. Walz +1
We demonstrate the excitation of ions to the Rydberg state by vacuum ultraviolet radiation at a wavelength of combined with the coherent manipulation of the…
Rydberg excitation of a single trapped ion
T. Feldker, P. Bachor, M. Stappel +4
We demonstrate excitation of a single trapped cold Ca ion to Rydberg levels by laser radiation in the vacuum-ultraviolet at 122 nm wavelength. Observed resonances are id…
A continuous wave 10 W cryogenic fiber amplifier at 1015 nm and frequency quadrupling to 254 nm
R. Steinborn, A. Koglbauer, P. Bachor +4
A stable, continuous wave, single frequency fiber amplifier system at 1015 nm with 10W output power is presented. It is based on a large mode double clad fiber cooled to liquid nit…
Mode shaping in mixed ion crystals of 40Ca2+ and 40Ca+
T. Feldker, L. Pelzer, M. Stappel +5
We present studies of mixed Coulomb crystals of 40Ca+ and 40Ca2+ ions in a linear Paul trap. Doubly charged ions are produced by photoionisation of trapped 40Ca+ with a vacuum ultr…