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Q: Fachverband Quantenoptik und Photonik

Q 25: Quanteninformation: Konzepte und Methoden 3

Q 25.4: Vortrag

Dienstag, 13. März 2012, 11:15–11:30, V7.01

Entanglement classes of three-qubit generalized Werner states — •Christopher Eltschka¹ and Jens Siewert^2,3 — ¹Institut für theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany — ²Departamento de Química Física, Universidad del País Vasco, 48080 Bilbao, Spain — ³Ikerbasque, Basque Foundation for Science, 48011 Bilbao, Spain

Determining the entanglement properties of multipartite states is a notoriously hard problem. Even for mixed states of three qubits, no general solution is known. An important special case are the mixtures of a maximally entangled state with white noise, also known as generalized Werner states.

We provide a complete solution giving the entanglement class not only for the generalized Werner states based on the three-qubit GHZ state, but for all states sharing the same symmetry.