Author Affiliations

I. Alonso Calafell,^1,* T. Strömberg,¹ D.R.M. Arvidsson-Shukur,^2,3 L.A. Rozema,¹ V. Saggio,¹ C. Graganti,¹ N.C. Harris,⁴ M. Prabhu,⁴ J. Carolan,⁴ M. Hochberg,⁵ T. Baehr-Jones,⁵ D. Englund,⁴ C.H.W. Barnes,² and P. Walther¹

¹Vienna Center for Quantum Science and Technology, Faculty of Physics, University of Vienna, Boltzmanngasse 5, Vienna A-1090, Austria

²Cavendish Laboratory, Department of Physics, University of Cambridge, CB3 0HE, Cambridge, United Kingdom

³Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA Quantum

⁴Photonics Group, RLE, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA

⁵Elenion Technologies, New York, NY 10016, USA

^*Corresponding author: irati.alonso.calafell@univie.ac.at