Zoey Z Hu

collaborators

4 papers

physics.atom-ph2026

Phase-continuous comparison of three all-optical time scales over 20 days

Dahyeon Lee, Kyungtae Kim, Zoey Z. Hu +11

Optical frequency standards have progressed rapidly over the past two decades, leading to the anticipated redefinition of the SI second by an optical frequency. However, time scale…

quant-ph2026

Lunar Silicon Cavity

Jun Ye, Zoey Z. Hu, Ben Lewis +5

The Moon's permanently shadowed regions (PSRs) are among the coldest places in the Solar System and are expected to become key landing sites for upcoming international space agency…

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.optics2025

Frequency stability of $2.5 \times 1 0^{- 17}$ in a Si cavity with AlGaAs crystalline mirrors

Dahyeon Lee, Zoey Z. Hu, Ben Lewis +8

Developments in ultrastable lasers have fueled remarkable advances in optical frequency metrology and quantum science. A key ingredient in further improving laser frequency stabili…

Phase-continuous comparison of three all-optical time scales over 20 days

Lunar Silicon Cavity

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

Frequency stability of 2.5×10−17 in a Si cavity with AlGaAs crystalline mirrors

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

Frequency stability of $2.5 \times 1 0^{- 17}$ in a Si cavity with AlGaAs crystalline mirrors