The 3D printed ion trap paper has been published: nature.com/articles/s41586-0…
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EDM Limits updated with more neutron results and an electron EDM limit from a ruby experiment.
github.com/Jayich-Lab/EDM-Li…
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In 2019 we started a collaboration with Marianna Safronova and Sergey Porsev to measure and calculate the metastable D state lifetimes of the radium ion.
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We started with radium 226 and found interesting systematics associated with its decay to the relatively long-lived radon 222, which caused collisional shifts. At some point we even figured out we could load strontium ions with the background ionizing radiation.
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We restarted the work with radium 224 and now 6 years later we have results on the two low-lying D state lifetimes: arxiv.org/abs/2501.18866
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Europium comagnetometers in a crystal to enable precision measurement searches for new physics: arxiv.org/abs/2412.17276
Spectroscopy of the Ra-224 ion's important transitions. With this and our photoionization paper, Ra-224 (3.6 d half-life) is straightforward to use. arxiv.org/abs/2409.09873
Our double pass acousto-optic modulator breadboard is mature: github.com/Jayich-Lab/double…
Our first work with radium-225 is on the arXiv: arxiv.org/abs/2407.14721 laser cooling, hyperfine measurements, & SPAM.
Yesterday in the lab the radium team realized Rabi flopping of the electron spin in the hyperfine ground state of a radium-225 ion. A microwave drove the electron's orientation between up and down. This is a plot from the lab notebook.
3D-printed ion traps: arxiv.org/abs/2310.00595
Neat that Guido van Rossum commented on an issue raised by Ganden: github.com/python/cpython/is…
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Radium-224 has a 3.6 day half-life. We've been laser cooling Ra-224 ions in a sealed system since February. Persistence and careful work to see the first ions got us through a bottleneck, opening many opportunities, starting with this paper posted today: arxiv.org/abs/2308.00241
Our perspective piece on the latest measurement (and best limit) of the electron's permanent electric dipole moment came out yesterday: science.org/doi/10.1126/scie…
A collection of measured EDM limits: github.com/Jayich-Lab/EDM-Li…
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Work trying to reduce the number of lasers for optical clocks is on the arXiv: arxiv.org/abs/2211.05313
Too many Windows bat files? pip install tray-launcher: pypi.org/project/tray-launch…
