Citation:Li, J., Fogarty, T., Cormick, C., Goold, J., Busch, T. and Paternostro, M. (2011) 'Tripartite nonlocality and continuous-variable entanglement in thermal states of trapped ions', Physical Review A, 84(2), 022321 (7pp). doi: 10.1103/PhysRevA.84.022321
We study a system of three trapped ions in an anisotropic bidimensional trap. By focusing on the transverse modes of the ions, we show that the mutual ion-ion Coulomb interactions set entanglement of a genuine tripartite nature, to some extent persistent to the thermal nature of the vibronic modes. We tackle this issue by addressing a nonlocality test in the phase space of the ionic system and quantifying the genuine residual tripartite entanglement in the continuous variable state of the transverse modes.
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