Phase-dependent interference mechanisms in a three-level Lambda system driven 
by a quantized laser field

Evers, Jörg

doi:10.1080/09500340500342403

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Phase-dependent interference mechanisms in a three-level Lambda system driven by a quantized laser field

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Evers, Jörg
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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http://www.tandfonline.com/doi/abs/10.1080/09500340500342403
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Citation

Evers, J. (2005). Phase-dependent interference mechanisms in a three-level Lambda system driven by a quantized laser field. Journal of Modern Optics, 52(18), 2699-2712. doi:10.1080/09500340500342403.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-8759-F

Abstract

The dynamics of an atomic few-level system can depend on the phase of driving fields coupled to the atom if certain conditions are satisfied. This is of particular interest to control interference effects, which can alter the system properties considerably. In this article, we discuss the mechanisms of such phase control and interference effects in an atomic three-level system in the ? configuration, where the upper state spontaneously decays into the two lower states. The lower states are coupled by a driving field, which we treat as quantized. This allows for an interpretation on the single photon level for both the vacuum and the driving field. By analysing the system behaviour for a driving field initially in non-classical states with only a few Fock number states populated, we find that even though the driving field is coupled to the lower states only, it induces a multiplet of upper states. Then interference occurs independently in three-level subsystems in the V configuration, each formed by two adjacent upper states and a single dressed lower state.