Lower Bound of Multipartite Concurrence Based on Sub-quantum State Decomposition

Published 8 Aug 2012 in quant-ph | (1208.1745v1)

Abstract: We study the entanglement of tripartite quantum states and provide analytical lower bound of concurrence in terms of the concurrence of sub-states. The lower bound may improve all the existing lower bounds of concurrence. The approach is generalized to arbitrary dimensional multipartite systems.

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