Probabilistic Remote Preparation Of Multi-particle Ghz Entangled State

Two schemes for probabilistic remote preparation of N-particle GHZ classstate are presented by using a partially entangled (N+1)-particle GHZ state asquantum channel. In this article, we firstly propose a remote preparation scheme ofan especial GHZ state, namely, the parameterαis a real number andβis a complexnumber. Then we consider how to remotely prepare an arbitrary GHZ state withcomplex parametersαandβ. Moreover, the total success probability and classicalcommunication cost are calculated. The results show that classical bit number doesnot increase with the number of particles.