Optical Feshbach resonances and ground-state-molecule production in the RbHg system

2017/08/31 by Mateusz Borkowski, Rodolfo Muñoz Rodriguez, Maciej B. Kosicki +3
Chemistry · Physics and Astronomy · #Ab initio #Advanced Frequency and Time Standards #Atomic physics #Chemistry #Cold Atom Physics and Bose-Einstein Condensates #Dissociation (chemistry) #Excited state #Ground state #Molecule #Physics #Quantum mechanics #Spectroscopy and Laser Applications #cond-mat.quant-gas #physics.atom-ph #physics.chem-ph

paper · pdf · doi:10.1103/physreva.96.063411

published as Phys. Rev. A 96, 063411 (2017) · 13 pages, 9 figures, 3 tables

arxiv created 2017/11/30 · openalex publication_date 2017/12/15 · arxiv updated 2017/12/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We present the prospects for photoassociation, optical control of interspecies scattering lengths, and, finally, the production of ultracold absolute ground-state molecules in the Rb+Hg system. We use the state-of-the-art ab initio methods for the calculations of ground- [CCSD(T)] and excited-state (EOM-CCSD) potential curves. The RbHg system, thanks to the wide range of stable Hg bosonic isotopes, offers possibilities for mass tuning of ground-state interactions. The optical lengths describing the strengths of optical Feshbach resonances near the Rb transitions are favorable even at large laser detunings. Ground-state RbHg molecules can be produced with efficiencies ranging from about 20% for deeply bound to at least 50% for weakly bound states close to the dissociation limit. Finally, electronic transitions with favorable Franck-Condon factors can be found for the purposes of a STIRAP transfer of the weakly bound RbHg molecules to the absolute ground state using commercially available lasers.

Citations

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