Author Affiliations

Yannick Salamin,^1,4,*,† Ileana-Cristina Benea-Chelmus,^2,5,† Yuriy Fedoryshyn,¹ Francesca F. Settembrini,² Wolfgang Heni,¹ Delwin L. Elder,³ Larry R. Dalton,³ Jérôme Faist,² and Juerg Leuthold¹

¹ETH Zurich, Institute of Electromagnetic Fields (IEF), 8092 Zurich, Switzerland.

²ETH Zurich, Institute for Quantum Electronics (IQE), 8093 Zurich, Switzerland.

³Department of Chemistry, University of Washington, Seattle, WA 98195-1700, USA.

⁴Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

⁵John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.

^†These authors contributed equally.

^*Corresponding author: salamin@mit.edu