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Regensburg 2013 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 48: Correlated Electrons: Quantum-Critical Phenomena - Theory

TT 48.7: Talk

Wednesday, March 13, 2013, 18:30–18:45, H19

Matrix Product States with Long-Range Localizable Entanglement — •Thorsten Wahl1, David Pérez-García2, and Ignacio Cirac11Max-Planck Institut für Quantenoptik, Hans-Kopfermann-Str. 1, Garching, D-85748, Germany — 2Departamento de Analisis Matematico, Universidad Complutense de Madrid, 28040 Madrid, Spain

Localizable entanglement is the maximum amount of entanglement that can be generated between two spins of a spin chain by measuring the remaining ones. The case of long-range localizable entanglement, where this amount is finite even if the two spins are infinitely far apart, constitutes a hidden long-range order and is important for quantum repeaters and the characterization of quantum phase transitions. A criterion will be presented which characterizes the full set of Matrix Product States with long-range localizable entanglement.

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