Stimulated Raman adiabatic passage via bright state in Λ medium of unequal oscillator strengths
Institute for Physical Research, NAS of Armenia, 0203
2 Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR CNRS 6303, Université de Bourgogne, 21078 Dijon Cedex, France
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Published online: 9 October 2012
We consider the population transfer process in a Λ-type atomic medium of unequal oscillator strengths by stimulated Raman adiabatic passage via bright-state (b-STIRAP) taking into account propagation effects. Using both analytic and numerical methods we show that the population transfer efficiency is sensitive to the ratio qp/qs of the transition oscillator strengths. We find that the case qp > qs is more detrimental for population transfer process as compared to the case where qp ≤ qs. For this case it is possible to increase medium dimensions while permitting efficient population transfer. A criterion determining the interaction adiabaticity in the course of propagation process is found. We also show that the mixing parameter characterizing the population transfer propagates superluminally.
Key words: Quantum Information
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2012