Mode entanglement of an electron in one-dimensional determined and random potentials
Longyan Gong, Peiqing Tong · Physical Review A · 2005
By using the measure of concurrence, mode entanglement of an electron moving in four kinds of one-dimensional determined and random potentials is studied numerically. The extended and localized states can be distinguished by mode entanglement. There are sharp transitions in concurrence at mobility edges. It provides that the mode entanglement may be a new index for a metal-insulator transition.