Controlling Spin Exchange Interactions of Ultracold Atoms in Optical Lattices

Details Controlling Spin Exchange Interactions of Ultracold Atoms in Optical Lattices Controlling Spin Exchange Interactions of Ultracold Atoms in Optical Lattices

2002-10-25

arxiv.org/abs/cond-mat/0210564v2

Phys. Rev. Lett. 91, 090402 (2003)

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 2 figures, revtex

Scientific paper

10.1103/PhysRevLett.91.090402

We describe a general technique that allows to induce and control strong interaction between spin states of neighboring atoms in an optical lattice. We show that the properties of spin exchange interactions, such as magnitude, sign, and anisotropy can be designed by adjusting the optical potentials. We illustrate how this technique can be used to efficiently ``engineer'' quantum spin systems with desired properties, for specific examples ranging from scalable quantum computation to probing a model with non-trivial topological orders that supports exotic non-abelian anyonic excitations.

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