2003/10/31 by B. Militello, B Militello, P. Aniello +3 · 1 citation
Physics and Astronomy · #Laser-Matter Interactions and Applications #Quantum optics and atomic interactions #Spectroscopy and Quantum Chemical Studies #quant-ph
paper · pdf · doi:10.1088/0305-4470/37/33/014
published as J.Phys.A37:8177-8187,2004 · 12 pages, no figures
arxiv created 2003/11/03 · openalex publication_date 2004/08/05 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
A novel result concerning Raman coupling schemes implemented using trapped ions is obtained. By means of an operator perturbative approach, it is shown that the complete time evolution of these systems can be expressed, with a high degree of accuracy, as the product of two unitary evolutions. The first one describes the time evolution related to an effective coarse grained dynamic. The second is a suitable correction restoring the fine dynamics suppressed by the coarse graining performed to adiabatically eliminate the nonresonantly coupled atomic level. The case where a decoherence source is present is also studied.