Designing spin-1 lattice models using polar molecules

Gavin K. Brennen*, Andrea Micheli, Peter Zoller

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)
14 Downloads (Pure)

Abstract

We describe how to design a large class of always on spin-1 interactions between polar molecules trapped in an optical lattice. The spin degrees of freedom correspond to the hyperfine levels of a ro-vibrational ground state molecule. Interactions are induced using a microwave field to mix ground states in one hyperfine manifold with the spin entangled dipole-dipole coupled excited states. Using multiple fields, anistropic models in one, two, or three dimensions can be built with tunable spatial range. An illustrative example in one-dimension is the generalized Haldane model, which at a specific parameter has a gapped valence bond solid ground state. The interaction strengths are large compared to decoherence rates and should allow for probing the rich phase structure of strongly correlated systems, including dimerized and gapped phases.

Original languageEnglish
Article number138
Pages (from-to)1-34
Number of pages34
JournalNew Journal of Physics
Volume9
DOIs
Publication statusPublished - 18 May 2007
Externally publishedYes

Bibliographical note

Copyright IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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