Direct-dynamical Entanglement–Discord relations

In this article, by considering Bell-diagonal two-qubit initial states under local dynamics generated by the Phase Damping, Bit Flip, Phase Flip, Bit Phase Flip, and Depolarizing channels, we report some elegant direct-dynamical relations between geometric measures of Entanglement and Discord. The c...

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Bibliographic Details
Published in:Quantum information processing 2017-05, Vol.16 (5), p.1-14, Article 128
Main Authors: Feldman, Virginia, Maziero, Jonas, Auyuanet, A.
Format: Article
Language:English
Subjects:
Damping
Data Structures and Information Theory
Depolarization
Mathematical Physics
Physics
Physics and Astronomy
Quantum Computing
Quantum entanglement
Quantum Information Technology
Quantum Physics
Spintronics
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Summary:In this article, by considering Bell-diagonal two-qubit initial states under local dynamics generated by the Phase Damping, Bit Flip, Phase Flip, Bit Phase Flip, and Depolarizing channels, we report some elegant direct-dynamical relations between geometric measures of Entanglement and Discord. The complex scenario appearing already in this simplified case study indicates that a similarly simple relation shall hardly be found in more general situations.
ISSN:1570-0755
1573-1332
DOI:10.1007/s11128-017-1580-4