Local available quantum correlations for Bell diagonal states and Markovian decoherence



Document title: Local available quantum correlations for Bell diagonal states and Markovian decoherence
Journal: Revista mexicana de física
Database: PERIÓDICA
System number: 000460991
ISSN: 0035-001X
Authors: 1
2
1
Institutions: 1Universidad Simón Bolívar, Departamento de Física, Caracas, Distrito Federal. Venezuela
2Universidad Católica del Norte, Departamento de Física, Antofagasta. Chile
Year:
Season: Nov-Dic
Volumen: 64
Number: 6
Pages: 662-670
Country: México
Language: Inglés
Document type: Artículo
Approach: Analítico, teórico
English abstract Local available quantum correlations (LAQCs), as defined by Mundarain et al., are analytically determined for Bell Diagonal states. Using the Kraus operators formalism, we analyze the dissipative dynamics of 2-qubit LAQCs under Markovian decoherence. This is done for Werner states under the depolarizing and phase damping channels. Since Werner states are among those that exhibit the so called entanglement sudden death, the results are compared with the ones obtained for Quantum Discord, as analyzed by Werlang et al., as well as for entanglement, i.e. Concurrence. The LAQCs quantifier only vanishes asymptotically, as was shown to be the case for Quantum Discord, in spite of being lower
Disciplines: Física y astronomía
Keyword: Física,
Correlaciones cuánticas,
Discordia cuántica,
Entrelazamiento,
Estados diagonales de Bell,
Estados de Werner,
Decoherencia
Keyword: Physics,
Quantum correlations,
Quantum discord,
Entanglement,
Bell diagonal states,
Werner states,
Decoherence
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