Classical and quantum correlations under decoherence

Journal Article · Thu Oct 15 00:00:00 EDT 2009 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.80.044102· OSTI ID:21316511

Maziero, J; Celeri, L C; Serra, R M ^[1]; Vedral, V ^[2]

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1. Centro de Ciencias Naturais e Humanas, Universidade Federal do ABC, R. Santa Adelia 166, Santo Andre 09210-170, SP (Brazil)
2. Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore 117543 (Singapore)

Recently some authors have pointed out that there exist nonclassical correlations which are more general, and possibly more fundamental, than entanglement. For these general quantum correlations and their classical counterparts, under the action of decoherence, we identify three general types of dynamics that include a peculiar sudden change in their decay rates. We show that, under suitable conditions, the classical correlation is unaffected by decoherence. Such dynamic behavior suggests an operational measure of both classical and quantum correlations that can be computed without any extremization procedur000.

• OSTI ID: 21316511
• Journal Information: Physical Review. A, Vol. 80, Issue 4; Other Information: DOI: 10.1103/PhysRevA.80.044102; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CORRELATIONS
INFORMATION THEORY
QUANTUM ENTANGLEMENT
QUANTUM INFORMATION
QUANTUM MECHANICS