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Conclusive identification of quantum channels via monogamy of quantum correlations
, S. Singha Roy, A.K. Pal, R. Prabhu, A. Sen(De), U. Sen
Published in Elsevier B.V.
Volume: 380
Issue: 43
Pages: 3588 - 3594
We investigate the action of global noise and local channels, namely, amplitude-damping, phase-damping, and depolarizing channels, on monogamy of quantum correlations, such as negativity and quantum discord, in three-qubit systems. We discuss the monotonic and non-monotonic variation, and robustness of the monogamy scores. By using monogamy scores, we propose a two-step protocol to conclusively identify the noise applied to the quantum system, by using generalized Greenberger–Horne–Zeilinger and generalized W states as resource states. We discuss a possible generalization of the results to higher number of parties. © 2016 Elsevier B.V.
About the journal
JournalData powered by TypesetPhysics Letters, Section A: General, Atomic and Solid State Physics
PublisherData powered by TypesetElsevier B.V.