Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevA.83.032324
Title: Operational interpretations of quantum discord
Authors: Cavalcanti, D. 
Aolita, L.
Boixo, S.
Modi, K. 
Piani, M.
Winter, A. 
Issue Date: 31-Mar-2011
Citation: Cavalcanti, D., Aolita, L., Boixo, S., Modi, K., Piani, M., Winter, A. (2011-03-31). Operational interpretations of quantum discord. Physical Review A - Atomic, Molecular, and Optical Physics 83 (3) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.83.032324
Abstract: Quantum discord quantifies nonclassical correlations beyond the standard classification of quantum states into entangled and unentangled. Although it has received considerable attention, it still lacks any precise interpretation in terms of some protocol in which quantum features are relevant. Here we give quantum discord its first information-theoretic operational meaning in terms of entanglement consumption in an extended quantum-state-merging protocol. We further relate the asymmetry of quantum discord with the performance imbalance in quantum state merging and dense coding. © 2011 American Physical Society.
Source Title: Physical Review A - Atomic, Molecular, and Optical Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/112478
ISSN: 10502947
DOI: 10.1103/PhysRevA.83.032324
Appears in Collections:Staff Publications

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