Nonlocality and entanglement in the XY model

Journal Article · Wed Dec 15 04:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.062101· OSTI ID:21528809

Batle, J; Casas, M ^[1]

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1. Departament de Fisica and Instituto de Fisica Interdisciplinar y Sistemas Complejos-Consejo Superior de Investigaciones Cientificas (IFISC-CSIC), Universitat de les Illes Balears, 07122 Palma de Mallorca (Spain)

Nonlocality and quantum entanglement constitute two special features of quantum systems of paramount importance in quantum-information theory (QIT). Essentially regarded as identical or equivalent for many years, they constitute different concepts. Describing nonlocality by means of the maximal violation of two Bell inequalities, we study both entanglement and nonlocality for two and three spins in the XY model. Our results shed light on the description of nonlocality and the possible information-theoretic task limitations of entanglement in an infinite quantum system.

• OSTI ID: 21528809
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANGULAR MOMENTUM
BELL THEOREM
INFORMATION
PARTICLE PROPERTIES
QUANTUM ENTANGLEMENT
QUANTUM INFORMATION
SPIN
TWO-DIMENSIONAL CALCULATIONS