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Article overview
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Realizing Fractional Chern Insulators with Dipolar Spins | | Norman Y. Yao
; Alexey V. Gorshkov
; Chris R. Laumann
; Andreas M. Läuchli
; Jun Ye
; Mikhail D. Lukin
; | | Date: |
19 Dec 2012 | | Abstract: | Strongly correlated quantum systems can exhibit exotic behavior controlled by
topology. We predict that the
u=1/2 fractional Chern insulator arises
naturally in a two-dimensional array of driven, dipolar-interacting spins. As a
specific implementation, we analyze how to prepare and detect synthetic gauge
potentials for the rotational excitations of ultra-cold polar molecules trapped
in a deep optical lattice. While the orbital motion of the molecules is pinned,
at finite densities, the rotational excitations form a fractional Chern
insulator. We present a detailed experimental blueprint for KRb, and
demonstrate that the energetics are consistent with near-term capabilities.
Prospects for the realization of such phases in solid-state dipolar systems are
discussed as are their possible applications. | | Source: | arXiv, 1212.4839 | | Services: | Forum | Review | PDF | Favorites | |
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