Darmstadt 2008 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 33: Ultrakalte Atome II [gemeinsam mit A]

Q 33.5: Talk

Thursday, March 13, 2008, 09:30–09:45, 2F

Light propagation in ultracold atomic gases confined by optical lattices — •Stefan Rist and Giovanna Morigi — Departament de Fisica, Universitat Autonoma de Barcelona, 08193 Bellaterra, Spain

We develop a theory which describes photon propagation in a medium constituted by ultracold atoms confined by an optical lattice. We discuss in particular the input-output relations taking into account the finite size of the optical lattice and the atoms quantum motion and statistics. This work extends previous studies [1,2] by considering the atomic vibrations at the lattice sites, the finite tunneling matrix elements, and saturation effects of the atomic transitions. The coherence properties of the transmitted light are discussed as a function of the quantum state of the gas.

[1] Deutsch et al. Phys. Rev. A 52, 1394 (1995).

[2] Chong et al. Phys. Rev. B 75, 235124 (2007).