2010/01/20 by Jing Qian, Weiping Zhang, Hong Y. Ling
Chemistry · Physics and Astronomy · #Adiabatic process #Atom (system on chip) #Atomic physics #Bose–Einstein condensate #Chemical polarity #Chemistry #Cold Atom Physics and Bose-Einstein Condensates #Ground state #Laser #Molecule #Physics #Polar #Quantum mechanics #Quantum optics and atomic interactions #Raman spectroscopy #Stimulated Raman adiabatic passage #Strong Light-Matter Interactions #cond-mat.quant-gas
paper · pdf · doi:10.1103/physreva.81.013632
8 pages, 2 figures, to appear in Phy. Rev. A
arxiv created 2010/01/20 · openalex publication_date 2010/01/29 · arxiv updated 2015/05/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We generalize the idea of chainwise stimulated Raman adiabatic passage (STIRAP) [Kuznetsova et al., Phys. Rev. A 78, 021402(R) (2008)] to a photoassociation-based chainwise atom-molecule system, with the goal of directly converting two-species atomic Bose-Einstein condensates (BEC) into a ground polar molecular BEC. We pay particular attention to the intermediate Raman laser fields, a control knob inaccessible to the usual three-level model. We find that an appropriate exploration of both the intermediate laser fields and the stability property of the atom-molecule STIRAP can greatly reduce the power demand on the photoassociation laser, a key concern for STIRAPs starting from free atoms due to the small Franck-Condon factor in the free-bound transition.