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Effects of Collisional Decoherence on Multipartite Entanglement - How would entanglement not be relatively common?

Guang-Hao Low·Zhiming Shi·Ye Yeo
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Abstract

We consider the collision model of Ziman {\em et al.} and study the robustness of $N$-qubit Greenberger-Horne-Zeilinger (GHZ), W, and linear cluster states. Our results show that $N$-qubit entanglement of GHZ states would be extremely fragile under collisional decoherence, and that of W states could be more robust than of linear cluster states. We indicate that the collision model of Ziman {\em et al.} could provide a physical mechanism to some known results in this area of investigations. More importantly, we show that it could give a clue as to how $N$-partite distillable entanglement would be relatively rare in our macroscopic classical world.

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Guang-Hao Low, Zhiming Shi, Ye Yeo. 2006-02-21. Effects of Collisional Decoherence on Multipartite Entanglement - How would entanglement not be relatively common?. https://doi.org/10.1103/physreva.74.012307

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