Darmstadt 2008 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 37: Quantengase (Wechselwirkungseffekte I)
Q 37.1: Vortrag
Donnerstag, 13. März 2008, 11:00–11:15, 1C
A number filter for matter-waves — •Reinhold Walser1, Andreas Sizmann2, Gerrit Nandi1, and József Fortágh3 — 1Institut für Quantenphysik, Universität Ulm — 2Ludwig-Maximilians-Universität München — 3Physikalisches Institut der Universität Tübingen
In current Bose-Einstein condensate experiments, the
shot-to-shot variation of atom number fluctuates up to 10%. In here, we
present a procedure to suppress such fluctuations by using a nonlinear
p−p matter wave interferometer for a Bose-Einstein condensate with
two internal states and a high beam-splitter asymmetry (p,p≠
0.5). We analyze the situation for an inhomogeneous trap within the
Gross-Pitaevskii mean-field theory, as well as a quantum mechanical
Josephson model, which addresses complementary aspects of the problem and
agrees well otherwise.
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[3] A. Sørensen and L.-M. Duan and J. I. Cirac and P. Zoller, Nature, 409, 63 (2001).
[4] U. V. Poulsen and K. Mølmer, Phys. Rev. A, 65, 033613, (2002).
[5] G. Nandi, A. Sizmann, J. Fortágh, and R. Walser, arXiv:0710.1737 (2007).