Robustness of multiqubit entanglement against local decoherence
Zhong‐Xiao Man, Yun‐Jie Xia, Nguyen Ba An · Physical Review A · 2008
We investigate the disentanglement dynamics of generalized multiqubit Greenberger-Horne-Zeilinger-type states $\ensuremath{\mid}{\ensuremath{\Psi}}_{n,N}⟩=\ensuremath{\alpha}{\ensuremath{\mid}1⟩}^{\ensuremath{\bigotimes}n}{\ensuremath{\mid}0⟩}^{\ensuremath{\bigotimes}(N\ensuremath{-}n)}+\ensuremath{\beta}{\ensuremath{\mid}0⟩}^{\ensuremath{\bigotimes}n}{\ensuremath{\mid}1⟩}^{\ensuremath{\bigotimes}(N\ensuremath{-}n)}$ (with $1\ensuremath{\leqslant}n