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Q: Fachverband Quantenoptik und Photonik

Q 47: Quantengase: Gitter und Tunneln I

Q 47.7: Vortrag

Donnerstag, 5. März 2009, 15:30–15:45, Audi-A

Particle number squeezing in a two-well system — •Cédric Bodet and Thomas Gasenzer — Institut für Theoretishe Physik, Universität Heidelberg, Philosophenweg 16, 69120 Heidelberg

The dynamical evolution of a Bose-Einstein condensate trapped in a one-dimensional lattice potential is investigated theoretically in the framework of the Bose-Hubbard model. The emphasis is set on the development of non-classical correlations and squeezing under circumstances where the system is strongly interacting and the evolution can no longer be described by classical statistical dynamics. We approach this problem by numerically solving the Schrödinger equation for this model and comparing those results to classical simulations. We study in detail particle number fluctuations, on-site and between sites, in order to investigate the conditions for producing squeezed states in experimentally realistic configurations, for example by raising a lattice potential inside a condensate.