,An Effective Entanglement among Three Fibre-Connected Distant Atoms

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Under the enlightenment of the scheme of Mancini and Bose [Phys. Rev. A 70 (2004)022307), we discuss two-atom entanglement in a fibre-connected triple-distant-atom system. Under adiabatic approximation, we obtain an effective Hamiltonian in form of the triple-body Ising-model interaction. The existence of a third atom is found to damage the other two-atom entanglement. The nearest-neighbouring two atoms that share a larger Ising strength are more strongly entangled.
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