Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 15: Quanteneffekte: Verschränkung und Dekohärenz 1

Q 15.2: Vortrag

Montag, 12. März 2012, 16:45–17:00, V7.01

Tripartite nonlocality and continuous-variable entanglement in thermal states of trapped ionsJie Li1, Thomás Fogarty2, •Cecilia Cormick3, John Goold2,4, Thomas Busch2, and Mauro Paternostro11School of Mathematics and Physics, Queen's University, Belfast BT7 1NN, United Kingdom — 2Physics Department, University College Cork, Cork, Ireland — 3Theoretische Physik, Universität des Saarlandes, D-66041 Saarbrücken, Germany — 4Clarendon Laboratory, University of Oxford, United Kingdom

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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