Analytic next-to-nearest neighbour XX models with perfect state transfer and fractional revival
arXiv:1607.02639 · doi:10.1103/PhysRevA.96.032335
Abstract
Certain non-uniformly coupled spin chains can exhibit perfect transfer of quantum states from end to end. Motivated by recent experimental implementations, we extend the simplest such chain to next-to-nearest neighbour (NNN) couplings. It is shown analytically that perfect state transfer can be maintained under the extension and that end-to-end entanglement generation (fractional revival) can occur.
12 pages
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