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Spectroscopy on the eEDM-sensitive states of ThF
Kia Boon Ng, Yan Zhou, Lan Cheng +8
An excellent candidate molecule for the measurement of the electron's electric dipole moment (eEDM) is thorium monofluoride (ThF) because the eEDM-sensitive state, , is…
Resolving the gravitational redshift within a millimeter atomic sample
Tobias Bothwell, Colin J. Kennedy, Alexander Aeppli +5
Einstein's theory of general relativity states that clocks at different gravitational potentials tick at different rates - an effect known as the gravitational redshift. As fundame…
High Phase-Space Density of Laser-Cooled Molecules in an Optical Lattice
Yewei Wu, Justin J. Burau, Kameron Mehling +2
We report laser cooling and trapping of yttrium monoxide (YO) molecules in an optical lattice. We show that gray molasses cooling remains exceptionally efficient for YO molecules i…
Precision Metrology Meets Cosmology: Improved Constraints on Ultralight Dark Matter from Atom-Cavity Frequency Comparisons
Colin J. Kennedy, Eric Oelker, John M. Robinson +6
We conduct frequency comparisons between a state-of-the-art strontium optical lattice clock, a cryogenic crystalline silicon cavity, and a hydrogen maser to set new bounds on the c…
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…
A tweezer clock with half-minute atomic coherence at optical frequencies and high relative stability
Aaron W. Young, William J. Eckner, William R. Milner +6
The preparation of large, low-entropy, highly coherent ensembles of identical quantum systems is foundational for many studies in quantum metrology, simulation, and information. He…