Flexible deterministic joint remote state preparation with a passive receiver

摘要

We use the Einstein-Podolsky-Rosen pairs as the quantum channel and adopt the adaptive measurement strategy to allow M > 1 separate parties to cooperatively prepare an arbitrary two-qubit state for a remote receiver, without leakage of the state's full information. Our protocol is flexible and convenient in the sense that the receiver can be assigned even after the distribution of the qubits of the shared quantum channel and once assigned he/she only needs to perform a simple recovery operation. In addition, our protocol always succeeds and is applicable to a certain realistic situation for which other protocols are not suited.