Author Affiliations

Igor Kudelin,^1,2,* Pedram Shirmohammadi,³ William Groman,^1,2 Samin Hanifi,³ Megan Kelleher,^1,2 Dahyeon Lee,^1,2 Charles McLemore,^1,2 Alexander Lind,^1,2 Steven Bowers,³ Franklyn Quinlan,^1,2 and Scott Diddams^1,2,4

¹Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO 80305, USA

²Department of Physics, University of Colorado, Boulder, CO 80309, USA

³Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, VA 22904, USA

⁴Electrical Computer and Energy Enginering, University of Colorado, Boulder, CO 80309, USA

^*Corresponding author: igor.kudelin@colorado.edu