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Robustness of Greenberger-Horne-Zeilinger and W states for teleportation in external environments (1111.4283v1)

Published 18 Nov 2011 in quant-ph

Abstract: By solving analytically a master equation in the Lindblad form, we study quantum teleportation of the one-qubit state under the influence of different surrounding environments, and compared the robustness between Greenberger-Horne-Zeilinger (GHZ) and W states in terms of their teleportation capacity. The results revealed that when subject to zero temperature environment, the GHZ state is always more robust than the W state, while the reverse situation occurs when the channel is subject to infinite temperature or dephasing environment.

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