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We present the prospects for photoassociation, optical control ofinterspecies scattering lengths and finally, the production of ultracoldabsolute ground state molecules in the Rb+Hg system. We use the "gold standard"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 ofstable Hg bosonic isotopes, offers possibilities for mass-tuning of groundstate interactions. The optical lengths describing the strengths of opticalFeshbach resonances near the Rb transitions are favorable even at large laserdetunings. Ground state RbHg molecules can be produced with efficienciesranging from about 20% for deeply bound to at least 50% for weakly bound statesclose to the dissociation limit. Finally, electronic transitions with favorableFranck-Condon factors can be found for the purposes of a STIRAP transfer of theweakly bound RbHg molecules to the absolute ground state using commerciallyavailable lasers.

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