Generating accessible entanglement in bosons via pair-correlated tunneling

@article{Volkoff2019GeneratingAE,
  title={Generating accessible entanglement in bosons via pair-correlated tunneling},
  author={Tyler Volkoff and Chris M. Herdman},
  journal={Physical Review A},
  year={2019}
}
We consider an extended Bose-Hubbard model that includes pair-correlated tunneling. We demonstrate that a minimal four-mode implementation of this model exhibits a pair-correlated regime in addition to Mott insulator and superfluid regimes. We propose a low complexity variational subspace for the ground state of the system in the pair-correlated regime, which we find to be numerically exact in pure pair-tunneling limit. Additionally, we propose a parameter-free high fidelity model wave function… 

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