We study quantum correlation of Greenberger–Horne–Zeilinger (GHZ) and W states under various noisy channels using measurement-induced disturbance approach and its optimized version. Although these inequivalent maximal entangled states represent the same quantum correlation in the absence of noise, it is shown that the W state is more robust than the GHZ state through most noisy channels. Also, using measurement-induced disturbance measure, we obtain the analytical relations for the time evolution of quantum correlations in terms of the noisy parameter $$\kappa $$ κ and remove its overestimating quantum correlations upon implementing the ameliorated measurement-induced disturbance.
Quantum Information Processing – Springer Journals
Published: Oct 11, 2014
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