Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2007-01-24
Las. Phys. 17, 889 (2007)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 5 figures
Scientific paper
10.1134/S1054660X07060175
In a recent paper -- F. Ciccarello \emph{et al.}, New J. Phys. \textbf{8}, 214 (2006) -- we have demonstrated that the electron transmission properties of a one-dimensional (1D) wire with two identical embedded spin-1/2 impurities can be significantly affected by entanglement between the spins of the scattering centers. Such effect is of particular interest in the control of transmission of quantum information in nanostructures and can be used as a detection scheme of maximally entangled states of two localized spins. In this letter, we relax the constraint that the two magnetic impurities are equal and investigate how the main results presented in the above paper are affected by a static disorder in the exchange coupling constants of the impurities. Good robustness against deviation from impurity symmetry is found for both the entanglement dependent transmission and the maximally entangled states generation scheme.
Ciccarello Francesco
Massimo Palma G.
Omar Yasser
Vieira Vitor Rocha
Zarcone Michelangelo
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