Decay of multiqudit entanglement
Zhao Liu, Heng Fan · Physical Review A · 2009
We investigate the decay of entanglement of a generalized $N$-qudit Greenberger-Horne-Zeilinger state with each qudit passing through independently in a quantum noisy channel. By studying the time at which the entanglement completely vanishes and the time at which the entanglement becomes arbitrarily small, we try to find how the robustness of entanglement is influenced by the dimension $d$ and the number of particles $N$.