Potsdam University Potsdam Quantum Optics Group

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A. Negretti and C. Henkel
Impact of finite temperature on a quasi one-dimensional BEC interferometer
J. Phys. Conf. Series 19 (2005) 134-38, proceedings of the Conference on Atoms and Molecules near Surfaces (CAMS), Heidelberg April 2005.


    We consider a time-dependent atom interferometer based on splitting and merging an elongated Bose-Einstein condensate (BEC) along the weakly bound axis. The interference phase is imprinted at maximum splitting, and both arms are then recombined. We discuss a framework to include thermally populated low-energy excitations. Previous studies performed at zero temperature in the mean field description are extended using a truncated Wigner method. First results are discussed for the dipole mode oscillations in the recombined trapping potential.

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