Greenberger-Horne-Zeilinger state generation in qubit-chains via a single $\pi /2$-pulse

Roberto Grimaudo, Nikolay V. Vitanov, Antonio Sergio Magalaes de Castro +2

A protocol for generating Greenberger-Horne-Zeilinger states in a system of $N$ coupled qubits is proposed. The Hamiltonian model assumes $N$-wise interactions between the $N$ qubi…