Matthias Paul Scholz

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We present a novel system where an optical cavity is integrated with a microfabricated planar-electrode ion trap. The trap electrodes produce a tunable periodic potential allowing the trapping of up to 50 separate ion chains aligned with the cavity and spaced by 160μm in a one-dimensional array along the cavity axis. Each chain can contain up to 20(More)
In this paper we show how the Lego Mindstorms NXT can be used for embedded team programming in Java. Furthermore, we demonstrate-for the first time-Python booted on NXT using an embedded Python project. Lego Mindstorms NXT is based on an ARM7 micro processor, and it comes with open source C code. There now exists a number of firmware replacements which(More)
In this paper we discuss and compare how LEGO MINDSTORMS NXT can be used to teach information systems (IS) students selected computer science subjects. We present the wide-spread robotics platform named LEGO MINDSTORMS NXT from LEGO Systems. It is an educational platform with an open source operating system. This open source property of LEGO MINDSTORMS has(More)
A two-level quantum system in vacuum—in the absence of any perturbing fields—constitutes an ideal clock whose oscillation frequency ω = E/h is given by the energy difference E between the two levels |1〉, |2〉. In a single measurement of duration T performed on a single particle this frequency can be determined with an uncertainty Δω = 1/T. If the measurement(More)
Free-electron lasers (FELs) generate femtosecond XUV and X-ray pulses at peak powers in the gigawatt range. The FEL user facility FLASH at DESY (Hamburg, Germany) is driven by a superconducting linear accelerator with up to 8000 pulses per second. Since 2014, two parallel undulator beamlines, FLASH1 and FLASH2, have been in operation. In addition to the(More)
Numerous photonics applications in research and industry require ultraviolet (UV) laser light. Only a few types of conventional laser systems provide UV light, and those emit at fixed wavelengths. Here, we present the latest developments in diode-based laser systems that produce continuous-wave (CW) tunable UV output, in which digital control electronics(More)