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In a joint collaboration Juerg Leuthold (D-ITET) and Jerome Faist (D-PHYS), together with Larry Dalton from the University of Washington, Department of Chemistry, Seattle, USA, show a terahertz detector on a silicon chip in Nature Communications. The two lead authors of the paper, Yannick Salamin (D-ITET) and Ileana-Cristina Benea-Chelmus (D-PHYS) see in this demonstration an enormous potential for future ultrasensitive broadband spectroscopy and telecommunication.