Information dissipation in random quantum networks

Abstract

We study the information dynamics in a network of spin-1/2 particles when edges representing XY interactions are randomly added to a disconnected graph according to a probability distribution characterized by a "weighting" parameter. In this way, we model dissipation of information initially localized in a single or in two qubits all over the network. We then show the dependence of this phenomenon on the weighting parameter and the size of the network. © World Scientific Publishing Company.