2008/06/04 by Elena Kuznetsova, Philippe Pellegrini, Robin Côté +4 · 28 citations
Chemistry · Physics and Astronomy · #Adiabatic process #Atom (system on chip) #Atomic physics #Chemistry #Cold Atom Physics and Bose-Einstein Condensates #Excited state #Ground state #Molecular physics #Molecule #Physics #Population #Quantum mechanics #Relaxation (psychology) #Rotational–vibrational spectroscopy #Spectroscopy and Laser Applications #State (computer science) #Stimulated Raman adiabatic passage #Strong Light-Matter Interactions #Transfer (computing) #quant-ph
paper · pdf · doi:10.1103/physreva.78.021402
published in Physical Review A 78(2) (American Physical Society)
arxiv created 2008/06/04 · openalex publication_date 2008/08/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We suggest and analyze a technique for efficient and robust creation of dense ultracold molecular ensembles in their ground rovibrational state. In our approach a molecule is brought to the ground state through a series of intermediate vibrational states via a multistate chainwise stimulated Raman adiabatic passage technique. We study the influence of the intermediate states decay on the transfer process and suggest an approach that minimizes the population of these states, resulting in a maximal transfer efficiency. As an example, we analyze the formation of 87Rb2 starting from an initial Feshbach molecular state and taking into account major decay mechanisms due to inelastic atom-molecule and molecule-molecule collisions. Numerical analysis suggests a transfer efficiency >90%, even in the presence of strong collisional relaxation as are present in a high density atomic gas.