Some features of the state-space trajectories followed by robust entangled four-qubit states during decoherence

A. P. Majtey, A. Borras, A. R. Plastino +2

In a recent work (Borras et al., Phys. Rev. A {\bf 79}, 022108 (2009)), we have determined, for various decoherence channels, four-qubit initial states exhibiting the most robust p…