Entanglement of Two Atoms in Insulator and Superfluid States
We study two coupled cavities, each of which contains two two-level atoms. We identify the regions of Mott-insulator and superfluid states. Ground-state entanglement of two atoms in one cavity has been investigated. The result show that quantum entanglement of two atoms within one cavity can also characterize quantum phase transition.
KeywordsInsulator state Superfluid state Ground-state entanglement Coupled cavity
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