2011/12/15 by Ning Jia, Jing Qian, Guangjiong Dong +1
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum Information and Cryptography #Quantum optics and atomic interactions #cond-mat.quant-gas #quant-ph
paper · pdf · doi:10.1088/0953-4075/45/1/015301
published as J. Phys. B: At. Mol. Opt. Phys. 45 (2012) 015301
openalex publication_date 2011/12/15 · arxiv created 2011/12/16 · arxiv updated 2011/12/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/02
We investigate the relationship between stability, adiabaticity and transfer efficiency in a Λ-type atom-molecule coupling system via a nonlinear stimulated Raman adiabatic passage. We find that only when the pump and control lasers overlap in time domain, the coherent population trapping (CPT) state could become unstable. If the overlapping time of the two lasers is short so that unstable growth of the deviation from the CPT state is negligible, then good adiabaticity of the CPT state could be maintained even in the unstable region. In this case, a high atom-molecule transfer efficiency could be obtained by chirping applied laser pulses to elegantly compensate the frequency shift induced by intra-atomic collision. Our results could be useful for efficiently photoassociating ground-state molecules from a cold atomic gas with strong atom-atom collisional interaction.