Synchrotron radiation sources: toolboxes for quantum technologies
A special look at the BESSY II experimental hall. © Volker Mai/HZB
The new edition of the Hitchhiker's Guide to synchrotron and FEL light sources for quantum technology has just been published, in print and online. © Anna Makarova/HZB
Synchrotron radiation sources generate highly brilliant light pulses, ranging from infrared to hard X-rays, which can be used to gain deep insights into complex materials. An international team has now published an overview on synchrotron methods for the further development of quantum materials and technologies in the journal Advanced Functional Materials: Using concrete examples, they show how these unique tools can help to unlock the potential of quantum technologies such as quantum computing, overcome production barriers and pave the way for future breakthroughs.
In quantum technologies, quantum physical principles such as superposition, interference and entanglement play a decisive role in their function. Components in quantum technology can perform calculations orders of magnitude more efficiently and encrypt information (quantum computing) or deliver unprecedented measurement accuracy in sensors. However, developing such components for practical use remains challenging because quantum systems are inherently sensitive to environmental disturbances, making precise control under normal conditions difficult. To make progress in this area and identify sources of error, it is essential that the materials and devices are thoroughly characterised and better understood.
Synchrotron and FEL radiation sources provide an ideal toolkit for this purpose. The available methods include non-destructive imaging, X-ray diffraction, spectroscopy, spectromicroscopy and investigations of electronic and magnetic nanostructures.
A team from HZB has written this overview together with colleagues from universities and other European synchrotron radiation sources.
Note:
The "Hitchhiker's Guide" to synchrotron and FEL light sources for quantum technology has been now printed and is available online ( www.helmholtz-berlin.de/srforqt ).
This brochure briefly introduces key methods and applications while offering a detailed directory of European experimental stations particularly suited for research in quantum technologies along with access modes and contacts.
"Hitchhiker's Guide" to synchrotron and FEL light sources for quantum technology
Anna Makarova, Oliver Rader, Kristiaan Temst, Jean Daillant (eds.)
- Magnon momentum microscopy: A new window into nanoscale spin-wavesAn international team lead by the Max Born Institute has developed a new type of momentum microscopy to image magnons — the quanta of collectively excited spins — directly in two-dimensional reciprocal space using soft X-rays. Measurements have taken place at BESSY II and PETRA III, first author ist the HZB physicist Steffen Wittrock. Owing to its remarkable sensitivity, simplicity, and access to nanometer-scale wavelengths, this novel technique establishes a powerful and versatile platform for exploring nonlinear magnon interactions, which are promising for future computing schemes.
- X-ray analysis reveals overpainted fascist symbolsErich Mercker was a successful painter during the Nazi era and in the years that followed. After 1945, he covered up Nazi symbols in at least one of his paintings. With an interdisciplinary team, physicist Dr Ioanna Mantouvalou reports on this study in the Nature Journal Heritage Science.
- AI agents deliver results – but do they reason scientifically?A research team co-led by Kevin Maik Jablonka from the Helmholtz Institute for Polymers in Energy Applications Jena (HIPOLE Jena) and N. M. Anoop Krishnan from the Indian Institute of Technology Delhi has developed Corral, a new benchmark for AI agents in science. The preprint “AI scientists produce results without reasoning scientifically” has been published on arXiv (https://doi.org/10.48550/arXiv.2604.18805). The analysis shows that current systems can execute scientific workflows and deliver results; however, they often do not follow the basic principles of scientific testing and reasoning.