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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 ions — Jie Li¹, Thomás Fogarty², •Cecilia Cormick³, John Goold^2,4, Thomas Busch², and Mauro Paternostro¹ — ¹School 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.