activity
20092026
most citedAtomic clock performance beyond the geodetic limit

732 citations · 3.8k across the 30 of their papers we have counts for

collaborators

30 papers

physics.optics2026★ 1 cited

Photo-birefringent effects in crystalline AlGaAs mirror coatings

Chun Yu Ma, Jialiang Yu, Thomas Legero +5

High-reflective crystalline coatings show reduced Brownian noise compared to conventional dielectric coatings. However, several ultra stable laser syste…

physics.optics2024★ 6 cited

Ultrastable lasers: investigations of crystalline mirrors and closed cycle cooling at 124 K

C. Y. Ma, J. Yu, T. Legero +8

We have investigated crystalline AlGaAs/GaAs optical coatings with three ultra-stable cavities operating at 4 K, 16 K, 124 K and 297 K. The response of the resonance frequencies of…

physics.optics2022★ 38 cited

Excess noise and photo-induced effects in highly reflective crystalline mirror coatings

Jialiang Yu, Dhruv Kedar, Sebastian Häfner +9

Thermodynamically induced length fluctuations of high-reflectivity mirror coatings put a fundamental limit on sensitivity and stability of precision optical interferometers like gr…

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.atom-ph2020★ 15 cited

Modeling motional energy spectra and lattice light shifts in optical lattice clocks

K. Beloy, W. F. McGrew, X. Zhang +5

We develop a model to describe the motional (i.e., external degree of freedom) energy spectra of atoms trapped in a one-dimensional optical lattice, taking into account both axial…