Hannover 2010 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 65: Quantum Gases : Lattices III

Q 65.4: Talk

Friday, March 12, 2010, 15:00–15:15, E 001

Multiphoton-like transitions in driven optical lattices — •Stephan Arlinghaus, Matthias Langemeyer, and Martin Holthaus — Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg

Recent experiments with ultracold atoms in time-periodically forced optical lattices performed by the Pisa group have clearly revealed phenomena related to forcing-induced interband transitions. In this talk we will show that theoretical concepts known from laser-induced electronic transitions in atoms or molecules can be transferred to the description of such interband transitions occurring in optical lattices. In particular, we discuss the emergence of multiphoton-like resonances, and outline how these can be detected experimentally. Our results indicate that ultracold atoms in lattices subjected to forcings with slowly varying strength may serve as powerful probes for coherently controlled quantum dynamics.