In this paper, the dynamics of tripartite entanglement via $$\pi $$ π -tangle in independent non-Markovian environments is investigated. The results indicate that the $$\pi $$ π -tangle vanishes periodically as decoherence time increases with a damping of its revival amplitude due to the memory of the non-Markovian environments. In addition, we present a scheme to protect entanglement of W state from non-Markovian environments by means of the quantum partially collapsing measurements. It is worth mentioning that our scheme is a successful protection for the tripartite quantum system and the effect is better for the larger measurement strength, while the stronger decoherence suppression induces smaller success probability.
Quantum Information Processing – Springer Journals
Published: May 27, 2016
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