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  • Letter
  • Open Access

Precision measurement of atom-dimer interaction in a uniform planar Bose gas

C. Maury, B. Bakkali-Hassani, G. Chauveau, F. Rabec, S. Nascimbene, J. Dalibard, and J. Beugnon

  • Laboratoire Kastler Brossel, Collège de France, CNRS, ENS-PSL University, Sorbonne Université, 11 Place Marcelin Berthelot, 75005 Paris, France

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Phys. Rev. Research 5, L012020 – Published 15 February, 2023

DOI: https://doi.org/10.1103/PhysRevResearch.5.L012020

Abstract

Cold quantum gases, when acted upon by electromagnetic fields, can give rise to samples where isolated atoms coexist with dimers or trimers, which raises the question of the interactions between these various constituents. Here we perform microwave photoassociation in a degenerate gas of Rb87 atoms to create weakly bound dimers in their electronic ground level. We determine the complete energy diagram of one hyperfine manifold of the least-bound level, which we accurately reproduce with a simple model. Then, from the density-induced shift of the photoassociation line, we measure the atom-dimer scattering length for two weakly bound states of the molecular potential.

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References (69)

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Phys. Rev. Research 5, L012020– Published 15 February, 2023
  • Received 14 November 2022
  • Accepted 12 January 2023
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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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