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Physicists couple key components of quantum technologies

Researchers at Münster University develop an easy-to-produce interface between quantum emitters and nanophotonic networks
© Jan Olthaus

Quantum effects are genuinely found in the world of nanostructures and allow a wide variety of new technological applications. For example, a quantum computer could in the future solve problems, which conventional computers need a lot of time to handle. All over the world, researchers are engaged in intensive work on the individual components of quantum technologies – these include circuits that process information using single photons instead of electricity, as well as light sources producing such individual quanta of light. Coupling these two components to produce integrated quantum optical circuits on chips presents a particular challenge.

Researchers at the University of Münster have now developed an interface that couples light sources for single photons with nanophotonic networks. This interface consists of so-called photonic crystals, i.e. nanostructured dielectric materials that can enhance a certain wavelength range when light passes through. Such photonic crystals are used in many areas of research, but they had not previously been optimized for this type of interface. The researchers took particular care to achieve this feat in a way that allows for replicating the photonic crystals straightforwardly by using established nanofabrication processes.

“Our work shows that it is not only in highly specialized laboratories and unique experiments that complex quantum technologies can be produced,” says physicist Dr. Carsten Schuck, an assistant professor at Münster University who headed the study together with Dr. Doris Reiter, likewise an assistant professor, who works in the field of solid state theory. The results could help to make quantum technologies scalable. The study has been published in the journal “Advanced Quantum Technologies”.

... read the full text! [en]

Fachschaft Physik
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The Physics Student Council’s Teaching Prize: Laureate 2019

Prof. Dr. Peter Krüger
© Fachschaft Physik

The Student Council’s award went to Prof. Dr. Peter Krüger this year, for the lecture series "Electronic Correlations and Magnetism" and "Introduction to Quantum Mechanics", a master lecture from the section of Physics of Low-Dimensional Solids and a bachelor lecture.

Since there are a lot of excellent lecturers at our department, the decision wasn't easy. Prof. Krüger convinced especially with evaluation results that are outstanding for a number of years. Therefore this year, both a bachelor and a master lecture were awarded the prize.

Prof. Dr. Peter Krüger is a scientist of the research group Rohlfing/Krüger at the Institute of Solid State Theory and is doing research on "Elektronic Structure and Dynamic of Condensed Matter". Among his fields of research is the calculation of structural, electronical and magnetical properties of solid states and surfaces among further aspects of theoretical solid state physics.

wissen|leben - Die Zeitung der WWU Münster, Ausgabe Juni 2019
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Von überragenden Forschern lernen

Doktorand Christian Schwermann trifft auf 39 Nobelpreisträger – zwei Physiker der WWU bei Tagung in Lindau
© Lisa Luks

Seit 68 Jahren bringt die Lindauer Nobelpreisträgertagung erfolgreiche Wissenschaftler und Nachwuchsforscher zusammen. In diesem Jahr ist die Tagung der Physik gewidmet. Vom 30. Juni bis 5. Juli treffen 39 Nobelpreisträger am Bodensee auf 580 exzellente Studierende, Doktoranden und PostDocs unter 35 Jahren aus 89 Ländern. In einem mehrstufigen internationalen Auswahlverfahren haben auch zwei junge Physiker der WWU Münster überzeugt. In dieser Ausgabe der wissen|leben schildert Christian Schwermann seine Erwartungen.

Den ganzen Text finden Sie in der aktuellen Ausgabe (06/2019) der wissen|leben, der Zeitung der WWU Münster.