Characterization and quantification of symmetric Gaussian-state entanglement through a local classicality criterion

Journal Article · Fri Jul 15 00:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.012317· OSTI ID:20718325

Oliveira, Marcos C. de ^[1]

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1. Instituto de Fisica Gleb Wataghin, Universidade Estadual de Campinas, 13083-970, Campinas-SP (Brazil)

A necessary and sufficient condition for characterization and quantification of entanglement of any bipartite Gaussian state belonging to a special symmetry class is given in terms of classicality measures of one-party states. For Gaussian states whose local covariance matrices have equal determinants it is shown that separability of a two-party state and classicality of a one-party state are completely equivalent to each other under a nonlocal operation, allowing entanglement features to be understood in terms of any available classicality measure.

• OSTI ID: 20718325
• Journal Information: Physical Review. A, Vol. 72, Issue 1; Other Information: DOI: 10.1103/PhysRevA.72.012317; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ENERGY LEVELS
GAUSSIAN PROCESSES
MATRICES
OPERATION
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
SYMMETRY