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Physics of higher orbital bands in optical lattices: a review

TitlePhysics of higher orbital bands in optical lattices: a review
Publication TypeJournal Article
Year of Publication2016
AuthorsX. Li, and V. W. Liu
Date PublishedNOV

The orbital degree of freedom plays a fundamental role in understanding the unconventional properties in solid state materials. Experimental progress in quantum atomic gases has demonstrated that high orbitals in optical lattices can be used to construct quantum emulators of exotic models beyond natural crystals, where novel many-body states such as complex Bose-Einstein condensates and topological semimetals emerge. A brief introduction of orbital degrees of freedom in optical lattices is given and a summary of exotic orbital models and resulting many-body phases is provided. Experimental consequences of the novel phases are also discussed.


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