Author Affiliations

Matthew W. Day,¹ Kelsey M. Bates,¹ Christopher L. Smallwood,^1,2,4 Ronald Ulbricht,^2,3,5 Travis M. Autry,^2,3,6 Rachel C. Owen,¹ Geoffrey Diederich,⁷ Tim Schröeder,⁸ Edward Bielejec,⁹ Mark E. Siemens,⁷ and Steven T. Cundiff^1,2,3,*

¹Department of Physics, University of Michigan, Ann Arbor MI 48109, USA

²JILA, University of Colorado and National Institute of Standards and Technology, Boulder CO 80309, USA

³Department of Physics, University of Colorado, Boulder CO 80309, USA

⁴Department of Physics and Astronomy, San Jose State University, San Jose CA 95192, USA

⁵School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore

⁶National Institute of Standards and Technology, Boulder CO 80305, USA

⁷Department of Physics and Astronomy, University of Denver, Denver CO 80208, USA

⁸Department of Physics, Humboldt-Universität zu Berlin, Berlin 12489, Germany

⁹Sandia National Laboratories, Albuquerque, New Mexico 87185, USA

^*Corresponding author: cundiff@umich.edu