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Assignment of excited-state bond lengths using branching-ratio measurements: The B$^2\Sigma^+$ state of BaH molecules

Autor: Moore, K., Lane, I. C., McNally, R. L., Zelevinsky, T.

Publikováno v: Phys. Rev. A 100, 022506 (2019)

Vibrational branching ratios in the B$^2\Sigma^+$ -- X$^2\Sigma^+$ and A$^2\Pi$ -- X$^2\Sigma^+$ optical-cycling transitions of BaH molecules are investigated using measurements and {\it ab initio} calculations. The experimental values are determined

Externí odkaz: http://arxiv.org/abs/1904.07326

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High-resolution optical spectroscopy with a buffer-gas-cooled beam of BaH molecules

Autor: Iwata, G. Z., McNally, R. L., Zelevinsky, T.

Publikováno v: Phys. Rev. A 96, 022509 (2017)

Barium monohydride (BaH) is an attractive candidate for extending laser cooling and trapping techniques to diatomic hydrides. The apparatus and high-resolution optical spectroscopy presented here demonstrate progress toward this goal. A cryogenic buf

Externí odkaz: http://arxiv.org/abs/1705.00113

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A Fermi-degenerate three-dimensional optical lattice clock

Autor: Campbell, S. L., Hutson, R. B., Marti, G. E., Goban, A., Oppong, N. Darkwah, McNally, R. L., Sonderhouse, L., Robinson, J. M., Zhang, W., Bloom, B. J., Ye, J.

Publikováno v: Science, vol. 358, no. 6359, pp. 90-94, 2017

Strontium optical lattice clocks have the potential to simultaneously interrogate millions of atoms with a high spectroscopic quality factor of $4 \times 10^{-17}$. Previously, atomic interactions have forced a compromise between clock stability, whi

Externí odkaz: http://arxiv.org/abs/1702.01210

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Systematic evaluation of an atomic clock at 2e-18 total uncertainty

Autor: Nicholson, T. L., Campbell, S. L., Hutson, R. B., Marti, G. E., Bloom, B. J., McNally, R. L., Zhang, W., Barrett, M. D., Safronova, M. S., Strouse, G. F., Tew, W. L., Ye, J.

Publikováno v: Nature Communications 6, 6896 (2015)

The pursuit of better atomic clocks has advanced many research areas, providing better quantum state control, new insights in quantum science, tighter limits on fundamental constant variation, and improved tests of relativity. The record for the best

Externí odkaz: http://arxiv.org/abs/1412.8261

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