206 citations · 589 across the 16 of their papers we have counts for
9 papers · 1 filter
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…
Atomic clock frequency ratios with fractional uncertainty
Alexander Aeppli, Willa J. Arthur-Dworschack, Kyle Beloy +24
We report high-precision frequency ratio measurements between optical atomic clocks based on Al, Yb, and Sr. With total fractional uncertainties at or bel…
Atomic Coherence of 2 minutes and Instability of 1.5E-18 at 1 s in a Wannier-Stark Lattice Clock
Kyungtae Kim, Alexander Aeppli, William Warfield +3
We explore the limits of atomic coherence and measurement precision in a 87Sr optical lattice clock. We perform a detailed characterization of key effects, including lattice Raman…
High-Stability Single-Ion Clock with 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 and fractional frequency stability of $3.5 \times10^{-16}/\sqrt{τ/\mathrm{s…
A High-Power Clock Laser Spectrally Tailored for High-Fidelity Quantum State Engineering
Lingfeng Yan, Stefan Lannig, William R. Milner +5
Highly frequency-stable lasers are a ubiquitous tool for optical frequency metrology, precision interferometry, and quantum information science. While making a universally applicab…
A clock with systematic uncertainty
Alexander Aeppli, Kyungtae Kim, William Warfield +2
We report an optical lattice clock with a total systematic uncertainty of in fractional frequency units, representing the lowest uncertainty of any clock to d…
Evaluation of lattice light shift at low 10 uncertainty for a shallow lattice Sr optical clock
Kyungtae Kim, Alexander Aeppli, Tobias Bothwell +1
A Wannier-Stark optical lattice clock has demonstrated unprecedented measurement precision for optical atomic clocks. We present a systematic evaluation of the lattice light shift,…
Doppler-free coherent-control spectroscopy with a colliding pair of shaped pulses
Minhyuk Kim, Kyungtae Kim, Dewen Cao +3
We demonstrate the use of the ultrafast spatial coherent-control method to resolve the fine-structure two-photon transitions of atomic rubidium. Counter-propagating ultrafast optic…
Coherent Control of Resonant Two-Photon Transitions by Counter-Propagating Ultrashort Pulse Pairs
Woojun Lee, Hyosub Kim, Kyungtae Kim +1
We describe optimized coherent control methods for two-photon transitions in atoms of a ladder-type three-state energy configuration. Our approach is based on the spatial coherent…