Exact State Revival in a Spin Chain with Next-To-Nearest Neighbour Interactions

Abstract

An extension with next-to-nearest neighbour interactions of the simplest XX spin chain with perfect state transfer (PST) is presented. The conditions for PST and entanglement generation (balanced fractional revival) can be obtained exactly and are discussed.

6 pages, Contribution to the Proceedings of Group 31, Rio de Janeiro, June 2016; based on a talk by Luc Vinet at this conference