Hannover 2010 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 22: Quantum Effects: Entanglement and Decoherence II

Q 22.4: Talk

Wednesday, March 10, 2010, 11:15–11:30, A 310

Scattering laser light on cold atoms: multiple scattering signals from single-atom responses — •Tobias Geiger¹, Thomas Wellens¹, Vyacheslav Shatokhin^1,2, and Andreas Buchleitner¹ — ¹Institute of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany — ²Stepanov Institute of Physics, National Academy of Sciences, Nezavisimosti Ave 68, 220072 Minsk, Belarus

We present a new approach to calculate the spectrum of a strong laser field multiply and inelastically scattered between cold atoms. A detailed diagrammatic ansatz is used to reduce the known master equation results derived in the complete composite Hilbert space of a few atoms to optical Bloch equations for single atoms, which can be linked to each other in a self consistent way. Equivalence between the exact solution and our new approach is derived in the case of large distances between the atoms. Putting our new approach to work, the treatment of mutiple scattering of intense laser light by a dilute cloud of many atoms comes into reach.