Darmstadt 2008 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 26: Posters: BECs, ultracold gases and plasmas

A 26.12: Poster

Donnerstag, 13. März 2008, 16:30–18:30, Poster C3

A novel atom chip based experiment for studies of Bose-Fermi mixtures in one dimension — •Philipp Wicke and Nicolaas Johannes van Druten — Van der Waals-Zeeman Institute, University of Amsterdam, The Netherlands

One-dimensional (1D) quantum gases offer exciting opportunities to explore many-body physics. A distinguishing feature of quantum physics in 1D is that exactly solvable models are available. Currently we investigate Bose gases in the 1D regime [1]. We plan to extend these studies to Bose-Fermi and Fermi-Fermi mixtures in 1D, and to make use of the many advantages that atom chips offer in this regard: rapid sympathetic cooling of the fermion ⁴⁰K by the boson ⁸⁷Rb on an atom chip has already been demonstrated [2], atom chips enable the study of individual realizations of 1D quantum gases [1], and finally they allow the use of versatile radio-frequency dressed potentials [3] that can be both state- and species-selective [4]. The latter should enable tuning the interaction parameters, in order to realize the above-mentioned exactly solvable models in our experiments. Our current design of an apparatus to investigate quantum degenerate mixtures of Rb and K will be presented at the conference. It includes a double chamber vacuum setup and a two-species MOT powered by a system of amplified diode lasers.

[1] van Amerongen et al., arXiv:0709.1899v1 (2007)

[2] Aubin et al., Nature Phys. 2, 384 (2006)

[3] Hofferberth et al., Nature Phys. 2, 710-716 (2006)

[4] Extavour et al., in Atomic Physics 20, 241-249 (2006)