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arxiv: 1409.6658 · v1 · pith:LK7VGSRKnew · submitted 2014-09-23 · 🪐 quant-ph

Quantum correlation evolution of GHZ and W states under noisy channels using ameliorated measurement-induced disturbance

classification 🪐 quant-ph
keywords quantumdisturbancemeasurement-inducednoisychannelscorrelationstatesameliorated
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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 $\kappa$ and remove its overestimating quantum correlations upon implementing the ameliorated measurement-induced disturbance.

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