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Q: Fachverband Quantenoptik und Photonik

Q 55: Poster II

Q 55.11: Poster

Donnerstag, 11. März 2010, 16:00–19:00, Lichthof

``Photon''-assisted tunnelling of ultra-cold atoms — •Martin Esmann, Kirsten Stiebler, Bettina Gertjerenken, Niklas Teichmann, and Christoph Weiss — Institute of Physics, Carl von Ossietzky University, D-26111 Oldenburg, Germany

``Photon''-assisted tunnelling has recently been realised experimentally for a Bose-Einstein condensate in an optical lattice [1]. The focus of this poster are numerical and analytical calculations on the transfer of ultra-cold atoms between neighbouring wells in double-well lattices for which effects like fractional photon resonances are important [2]. Subwavelength lattices are also investigated.

[1] C. Sias, H. Lignier, Y. P. Singh, A. Zenesini, D. Ciampini, O. Morsch, and E. Arimondo, Phys. Rev. Lett. 100, 040404 (2008).

[2] N. Teichmann, M. Esmann, and C. Weiss, Phys. Rev. A 79, 063620 (2009).