An optional remote state preparation protocol for a four-qubit entangled state

Abstract

In this paper, we introduce a remote state preparation protocol for the case of a known four-qubit entangled state in which there are two possible receivers and the sender has the option of choosing one of the two possible parties for a preparation of the intended state at the end of the chosen party. The sender begins with a measurement on a two-qubit system in which the measurement basis is chosen by using the known information of the state. After that she exercises her option which is exclusively her own prerogative. The protocol has four components depending on the four different measurement results of the sender. The scheme is compared in terms of efficiency with other contemporary remote state preparation protocols for similar purposes.