Hannover 2010 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 31: Quantum Gases: Interaction Effects II

Q 31.5: Talk

Wednesday, March 10, 2010, 15:00–15:15, E 001

Generating ‘Schrödinger-cat’ states via scattering of quantum matter wave solitons — •Christoph Weiss — Institute of Physics, Carl von Ossietzky University, D-26111 Oldenburg, Germany

The generation of spatial quantum superpostions via scattering solitons off a laserfocus can be understood with a mathematically justified [1] (for numeric investigations on the N-particle level see Ref. [2]).

The motion of two attractively interacting atoms in an optical lattice is investigated in the presence of a scattering potential. The initial wavefunction can be prepared by using tightly bound exact two-particle eigenfunction for vanishing scattering potential. This allows to numerically simulate the dynamics in the generation of two-particle Schrodinger cat states using a scheme recently proposed for scattering of quantum matter wave solitons.

[1] C. Weiss and Y. Castin, Phys. Rev. Lett. 102, 010403 (2009).

[2] A. I. Streltsov, O. E. Alon, and L. S. Cederbaum, Phys. Rev. A 80, 043616 (2009).

[3] C. Weiss, arXiv:0910.1162v1 [cond-mat.quant-gas] (2009).