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Magnetic Feshbach resonances between atoms in $^2$S and $^3$P$_0$ states: mechanisms and dependence on atomic properties

Mukherjee, B.; Frye, M.D.; Hutson, J.M.

Magnetic Feshbach resonances between atoms in $^2$S and $^3$P$_0$ states: mechanisms and dependence on atomic properties Thumbnail


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Abstract

Magnetically tunable Feshbach resonances exist in ultracold collisions between atoms in 2 S and 3 P 0 states, such as an alkali-metal atom colliding with Yb or Sr in a clock state. We investigate the mechanisms of these resonances and identify the terms in the collision Hamiltonian responsible for them. They involve indirect coupling between the open and closed channels, via intermediate channels involving atoms in 3 P 1 states. The resonance widths are generally proportional to the square of the magnetic field and are strongly enhanced when the magnitude of the background scattering length is large. For any given pair of atoms, the scattering length can be tuned discretely by choosing different isotopes of the 3 P 0 atom. For each combination of an alkali-metal atom and either Yb or Sr, we consider the prospects of finding an isotopic combination that has both a large background scattering length and resonances at a high but experimentally accessible field. We conclude that 87 Rb + Yb , Cs + Yb , and 85 Rb + Sr are particularly promising combinations.

Citation

Mukherjee, B., Frye, M., & Hutson, J. (2023). Magnetic Feshbach resonances between atoms in $^2$S and $^3$P$_0$ states: mechanisms and dependence on atomic properties. Physical Review Research, 5, Article 013102. https://doi.org/10.1103/physrevresearch.5.013102

Journal Article Type Article
Acceptance Date Jan 17, 2023
Online Publication Date Feb 13, 2023
Publication Date 2023
Deposit Date Feb 15, 2023
Publicly Available Date Mar 2, 2023
Journal Physical Review Research
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 5
Article Number 013102
DOI https://doi.org/10.1103/physrevresearch.5.013102
Related Public URLs http://arxiv.org/abs/2211.07557

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http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.




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