Atomic quantum simulator for lattice gauge theories and ring exchange models |
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Authors: | Büchler H P Hermele M Huber S D Fisher Matthew P A Zoller P |
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Institution: | Institute for Quantum Optics and Quantum Information of the Austrian Academy of Science, Innsbruck. |
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Abstract: | We present the design of a ring exchange interaction in cold atomic gases subjected to an optical lattice using well-understood tools for manipulating and controlling such gases. The strength of this interaction can be tuned independently and describes the correlated hopping of two bosons. We discuss a setup where this coupling term may allow for the realization and observation of exotic quantum phases, including a deconfined insulator described by the Coulomb phase of a three-dimensional U(1) lattice gauge theory. |
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