提出了已知四量子纠缠态的一个远程态制备协议,其中有两个可能的接收者,发送方 可以在两个可能的接收者中选择其中的一个,并在选定的接收者处制备预期的量子态。发送者首先引入两个辅助粒子,执行两 个受控非门操作,然后对二粒子系统进行两个投影测量,其测量基是通过已知态的信息来选择的,并行使自己的特有选择权。 根据发送方的16种不同测量结果,协议有16 个部分。给出了方案的内在效率,以及与现有相应方案相比存在的优势。

A remote state preparation protocol for a known four-quantum entangled state is proposed, in which there are two possible receivers, and the sender can choose one of the two possible receivers to prepare an intended quantum state at the chosen receiver. The sender first introduces two auxiliary quantum particles and performs two controlled non-gate operations. Then two projection measurements on two-particle systems are carried out, where the measurement bases are chosen by using the information of the known states. At last the sender exercises her option which is exclusively her own prerogative. According to sixteen different measurement results of the sender, the protocol consists of sixteen parts. The intrinsic efficiency of the scheme is given, and its comparative advantages are also pointed out by comparing with the existing corresponding schemes.