Interaction-induced coherence among polar bosons stored in triple-well potentials
arXiv:1212.2947 · doi:10.1103/PhysRevA.88.063608
Abstract
We study first-order spatial coherence for interacting polar bosons trapped in triple-well potentials. It is argued that besides the well-known coherence produced by couplings related to tunneling between the sites, there exists a nonlocal coherence predominantly determined by intersite interactions, which prevails between the outer sites of the triple well when their total filling is odd. We find that the nonlocal interaction-induced coherence originates from the superposition of degenerate many-body states in symmetric triple wells, and demonstrate its robustness against perturbations due to various tunneling mechanisms and thermal fluctuations.
8 pages of RevTex4-1, 6 figures
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Cited by in corpus (16)
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