Work

Multipartite entanglement in spin chains

Year: 2005

Type: article

Abstract: We investigate the presence of multipartite entanglement in macroscopic spin chains. We discuss the Heisenberg and the XY model and derive bounds on the internal energy for systems without multipartite entanglement. Based on this we show that in thermal equilibrium the above-mentioned spin systems contain genuine multipartite entanglement, even at finite modest temperatures.

Source: New Journal of Physics

DOI: 10.1088/1367-2630/7/1/229

Authors: Otfried Gühne, Géza Tóth, Hans J Briegel

Institutions: Austrian Academy of Sciences, Institute for Quantum Optics and Quantum Information Innsbruck, Max Planck Institute of Quantum Optics, Universität Innsbruck

Language: English

Topic: Quantum many-body systems

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,610

Funders: Deutsche Forschungsgemeinschaft, Austrian Science Fund