Joint remote state preparation of a qubit via triatomic <i>W</i> entangled state based on cavity QED

Abstract A physical protocol for joint preparation of a single atomic qubit state remotely in the context of an atom system from two senders and one receiver spatially separated is proposed. A triatomic entangled W -type state is used as the quantum channel, and the control of the state of a single two-level atom can be achieved by the interaction of the atom and the classical field. We show that the joint remote state preparation of an atomic single qubit can be successful in a probabilistic manner under the condition that the classical information of the single-qubit state is split in the correct way.