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A feasible scheme for protecting the Greenberger–Horne–Zeilinger (GHZ) entanglement state in non-Markovian environments is proposed. It consists of prior weak measurement on each qubit before the interaction with decoherence environments followed by post quantum measurement reversals. It is shown that both the fidelity and concurrence of the GHZ state can be effectively improved. Meanwhile, we also...
In this paper, the dynamics of concurrence and quantum discord (QD) for the Werner state in independent non-Markovian environment is investigated. Our result manifests that QD reveal more properties about quantum correlations than concurrence for the given system. Additionally, an optimal scheme is proposed to suppress decoherence by performing prior weak measurement and post-measurement reversal...
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