Nonequilibrium quantum magnetism in a dipolar lattice gas

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We report on the realization of quantum magnetism using a degenerate dipolar gas in an optical lattice. Our system implements a lattice model resembling the celebrated t-J model. It is characterized by a nonequilibrium spinor dynamics resulting from intersite Heisenberg-like spin-spin interactions provided by nonlocal dipole-dipole interactions. Moreover, due to its large spin, our chromium lattice gases constitute an excellent environment for the study of quantum magnetism of high-spin systems, as illustrated by the complex spin dynamics observed for doubly occupied sites.
© 2013 American Physical Society. We acknowledge financial support from Conseil Regional d'Ile-de-France and from Ministere de l'Enseignement Superieur et de la Recherche within IFRAF and CPER. L. S. acknowledges support from the Deutsche Forschungsgemeinschaft (SA1031/6) and the Cluster of Excellence QUEST.
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