High-resolution X-ray spectroscopy at modern synchrotron light sources is an indispensable tool for many fields of science. Existing X-ray spectrometers, however, provide either excellent resolution at low efficiency or moderate resolution at high efficiency. Within the project "QUASY - Quantum Sensor Platform for Synchrotron X-ray Spectroscopy", funded by the EXU initiative KIT Future Fields, the KIT institutes IMS, IPS, and INE therefore intend to install a quantum sensor array as demonstrator at the KIT Light Source to prove that high efficiency and excellent energy resolution can be achieved at the same time. The successful completion of this project will subsequently pave the way for the future application of highly efficient and ultrahigh-resolution quantum sensors in X-ray spectroscopy at modern synchrotron light sources.

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Researchers at the Institute for Micro- and Nanoelectronic Systems have presented a software tool in the Journal of Applied Physics that enables highly detailed numerical simulations of microwave SQUID multiplexers. This software facilitates systematic optimization and theoretical analysis of these components, which would not be feasible using purely analytical methods