Three-spin interactions and entanglement in optical lattices

Details Three-spin interactions and entanglement in optical lattices Three-spin interactions and entanglement in optical lattices

2005-05-30

arxiv.org/abs/quant-ph/0505225v1

International Journal of Quantum Information, Vol. 4, p. 541 (2006)

Physics

Quantum Physics

9 pages, 6 figures, talk presented at the De Giorgi Workshop on Entanglement in Physical and Information Science, Pisa 2004

Scientific paper

The entanglement properties of some novel quantum systems are studied that are inspired by recent developments in cold-atom technology. A triangular optical lattice of two atomic species can be employed to generate a variety of spin-1/2 Hamiltonians including effective three-spin interactions. A variety of one or two dimensional systems can thus be realized that possess multi-degenerate ground states or non-vanishing chirality. The properties of these ground states and their phase transitions are probed with appropriate measures such as the entropic entanglement and the spin chirality.

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