2024 — Atomic clocks that excite the nucleus of thorium-229 embedded in a transparent crystal when hit by a laser beam could yield the most accurate measurements ever of time and gravity ...

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Antihydrogen is the simplest atom of pure antimatter. Measurements of a pair of ultraviolet spectral lines with laser spectroscopy provide stringent bounds on the magnitude by which a symmetry ...

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Department of Electrical and Computer Engineering, University of Washington, Seattle, Washington 98195, United States ...