Precision measurement of atom-dimer interaction in a uniform planar Bose gas - Archive ouverte HAL
Article Dans Une Revue Physical Review Research Année : 2023

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

Résumé

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 87 Rb 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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hal-04022876 , version 1 (10-03-2023)

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Chloé Maury, Brice Bakkali-Hassani, Guillaume Chauveau, Franco Rabec, Sylvain Nascimbène, et al.. Precision measurement of atom-dimer interaction in a uniform planar Bose gas. Physical Review Research, 2023, 5 (1), pp.L012020. ⟨10.1103/PhysRevResearch.5.L012020⟩. ⟨hal-04022876⟩
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