T. Fortier

collaborators

3 papers

physics.atom-ph2025

Atomic clock frequency ratios with fractional uncertainty $\leq 3.2 \times 1 0^{- 18}$

Alexander Aeppli, Willa J. Arthur-Dworschack, Kyle Beloy +24

We report high-precision frequency ratio measurements between optical atomic clocks based on $^{27}$ Al $^{+}$ , $^{171}$ Yb, and $^{87}$ Sr. With total fractional uncertainties at or bel…

physics.atom-ph2025

High-Stability Single-Ion Clock with $5.5 \times 1 0^{- 19}$ Systematic Uncertainty

Mason C. Marshall, Daniel A. Rodriguez Castillo, Willa J. Arthur-Dworschack +10

We report a single-ion optical atomic clock with fractional frequency uncertainty of $5.5 \times 1 0^{- 19}$ and fractional frequency stability of $3.5 \times10^{-16}/\sqrt{Ï/\mathrm{…

physics.optics2025

Radio Frequency from Optical with Instabilities below $1 0^{- 15}$ - Generation and Measurement

A. Hati, M. Pomponio, N. V. Nardelli +7

This paper presents a frequency synthesis that achieves exceptional stability by transferring optical signals to the radio frequency (RF) domain at 100 MHz. We describe and charact…

Atomic clock frequency ratios with fractional uncertainty ≤3.2×10−18

High-Stability Single-Ion Clock with 5.5×10−19 Systematic Uncertainty

Radio Frequency from Optical with Instabilities below 10−15- Generation and Measurement

Atomic clock frequency ratios with fractional uncertainty $\leq 3.2 \times 1 0^{- 18}$

High-Stability Single-Ion Clock with $5.5 \times 1 0^{- 19}$ Systematic Uncertainty

Radio Frequency from Optical with Instabilities below $1 0^{- 15}$ - Generation and Measurement