%0 Journal Article
%T Transitions in quantum networks
%A Paivi Torma
%J Physics
%D 1998
%I arXiv
%R 10.1103/PhysRevLett.81.2185
%X We consider transitions in quantum networks analogous to those in the two-dimensional Ising model. We show that for a network of active components the transition is between the quantum and the classical behaviour of the network, and the critical amplification coincides with the fundamental quantum cloning limit.
%U http://arxiv.org/abs/quant-ph/9802024v2