Potsdam University Potsdam Quantum Optics Group

Universität Potsdam
Institut für Physik
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14476 Potsdam-Golm
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A. Negretti and C. Henkel
Enhanced phase sensitivity and soliton formation in an integrated BEC interferometer
J. Phys. B 37 (2004) L385-L390


    We study the dynamics of Bose-Einstein condensates in time-dependent microtraps for the purpose of understanding the influence of the mean field interaction on the performance of interferometers. We identify conditions where the non-linearity due to atom interactions increases the sensitivity of interferometers to a phase shift. This feature is connected with the adiabatic generation of a dark soliton. We analyze the robustness of this phenomenon with respect to thermal fluctuations, due to excited near fields in an electromagnetic surface trap.

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