Hannover 2010 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 63: Quantum Effects: Entanglement and Decoherence III

Q 63.1: Group Report

Friday, March 12, 2010, 14:00–14:30, A 310

Multipartite entanglement: Creation with identical particles and general classification — •Malte Tichy, Benno Salwey, Klaus Mayer, Florian Mintert, and Andreas Buchleitner — Albert-Ludwigs-Universität Freiburg

We study the classification of entanglement in high-dimensional multipartite systems and processes to generate states of distinct entanglement properties by means of linear optics. Two states are said to contain a different kind of entanglement if they cannot be obtained from each other with finite probability just by means of local manipulation. We derive a general framework to discriminate inequivalent entanglement properties in high dimensional multi-partite systems via permutation symmetries of multiple tensor products of the quantum states. Having identified distinct classes of entanglement, we investigate which of those can emerge in multidimensional many-particle quantum walks with bosons and fermions and point out the differences to analogous situations with distinguishable particles. In particular we focus on the generalized n-port beam splitter, easily realizable for photons with linear optics elements only, and the fourpartite qubit case.