Author Affiliations

Elizabeth A. Goldschmidt,^1,2 Ivan A. Burenkov,^1,3 Ankita K. Sharma,³ Thomas Gerrits,⁴ Georg Harder,⁵ Tim J. Bartley,^4,5 Christine Silberhorn,⁵ and Sergey V. Polyakov³

¹Joint Quantum Institute, University of Maryland, College Park, MD 20742, USA.

²United States Army Research Laboratory, Adelphi, MD 20783, USA.

³National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.

⁴National Institute of Standards and Technology, Boulder, CO 80305, USA

⁵University of Paderborn, 33098 Paderborn, Germany