August 18 2011

New article: Phys. Rev. A 84, 022321

Tripartite nonlocality and continuous-variable entanglement in thermal states of trapped ions
Jie Li, Thomás Fogarty, Cecilia Cormick, John Goold, Thomas Busch, and Mauro Paternostro.
Phys. Rev. A 84, 022321 (2011).

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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