activity
20052020
most citedAn atomic clock with instability

821 citations · 2.9k across the 22 of their papers we have counts for

collaborators

22 papers

physics.optics2020★ 28 cited

Optical Atomic Clock Comparison through Turbulent Air

Martha I. Bodine, Jean-Daniel Deschênes, Isaac H. Khader +32

We use frequency comb-based optical two-way time-frequency transfer (O-TWTFT) to measure the optical frequency ratio of state-of-the-art ytterbium and strontium optical atomic cloc…

physics.atom-ph2020★ 14 cited

Frequency Ratio Measurements with 18-digit Accuracy Using a Network of Optical Clocks

Boulder Atomic Clock Optical Network, Collaboration, : +35

Atomic clocks occupy a unique position in measurement science, exhibiting higher accuracy than any other measurement standard and underpinning six out of seven base units in the SI…

physics.optics2020★ 175 cited

Coherent Optical Clock Down-Conversion for Microwave Frequencies with 10-18 Instability

Takuma Nakamura, Josue Davila-Rodriguez, Holly Leopardi +12

Optical atomic clocks are poised to redefine the SI second, thanks to stability and accuracy more than one hundred times better than the current microwave atomic clock standard. Ho…

physics.atom-ph2019★ 82 cited

Demonstration of a time scale based on a stable optical carrier

William R. Milner, John M. Robinson, Colin J. Kennedy +13

We demonstrate a time scale based on a phase stable optical carrier that accumulates an estimated time error of ps over 34 days of operation. This all-optical time scale…

physics.app-ph2019★ 53 cited

Optical-Clock-Based Time Scale

Jian Yao, Jeff A. Sherman, Tara Fortier +14

A time scale is a procedure for accurately and continuously marking the passage of time. It is exemplified by Coordinated Universal Time (UTC), and provides the backbone for critic…

physics.atom-ph2018★ 4 cited

Towards Adoption of an Optical Second: Verifying Optical Clocks at the SI Limit

W. F. McGrew, X. Zhang, H. Leopardi +13

The pursuit of ever more precise measures of time and frequency is likely to lead to the eventual redefinition of the second in terms of an optical atomic transition. To ensure con…