Abstract
We study the entanglement properties of a class of -qubit quantum states that are generated in arrays of qubits with an Ising-type interaction. These states contain a large amount of entanglement as given by their Schmidt measure. They also have a high persistency of entanglement which means that qubits have to be measured to disentangle the state. These states can be regarded as an entanglement resource since one can generate a family of other multiparticle entangled states such as the generalized Greenberger-Horne-Zeilinger states of qubits by simple measurements and classical communication.
- Received 11 April 2000
DOI:https://doi.org/10.1103/PhysRevLett.86.910
©2001 American Physical Society