Stuttgart 2012 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 67: Quanteneffekte: Verschränkung und Dekohärenz 2

Q 67.5: Talk

Friday, March 16, 2012, 15:00–15:15, V7.01

A Hierarchy of Entanglement — •Federico Levi and Florian Mintert — Freiburg Institute for Advanced Studies (FRIAS), Albert-Ludwigs-Universität Freiburg, Albertstr. 19, 79104 Freiburg

We construct a hierarchy of criteria that identifies the different degrees of entanglement within mixed, N-partite systems. The K-th element in the hierarchy is positive for states with at least K-body entanglement, so that the hierarchy provides a detailed characterisation of many-body entanglement ranging from bipartite to genuine N-body entanglement. As we show, the different degrees of entanglement detected by the different elements in the hierarchy are also reflected in different dynamical behaviour as the system undergoes coherent or incoherent evolution.